TCTN14-

48_FOD 

Characteriz

ation at 

Large 

Internation

al 

Airport_02

-03-15 

Foreign Object Debris Characterization

at a Large International Airport

February 2015

DOT/FAA/TC-TN14/48

This document is available to the U.S. public through the National 

Technical Information Services (NTIS), Springfield, Virginia 22161.

This document is also available from the Federal Aviation Administration 

William J. Hughes Technical Center at actlibrary.tc.faa.gov

U.S. Department of Transportation

Federal Aviation Administration

ote technical note technica 
NOTICE

This document is disseminated under the sponsorship of the U.S. 

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The United States Government assumes no liability for the contents or 

use thereof. The United States Government does not endorse products 

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solely because they are considered essential to the objective of this 

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agency. This document does not constitute FAA policy. Consult the 

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page as to its use.

This report is available at the Federal Aviation Administration William J. 

Hughes Technical Center’s Full-Text Technical Reports page: 

actlibrary.tc.faa.gov in Adobe Acrobat portable document format 

(PDF).
Technical Report Documentation Page

1. Report No.

DOT/FAA/TC-TN14/48

2. Government Accession No. 3. Recipient's Catalog No.

4. Title and Subtitle

FOREIGN OBJECT DEBRIS CHARACTERIZATION AT A LARGE 

INTERNATIONAL AIRPORT

5. Report Date

February 2015

6. Performing Organization Code

7. Author(s)

Edwin E. Herricks, David Mayer, and Sidney Majumdar

8. Performing Organization Report No.

 9. Performing Organization Name and Address

Center of Excellence for Airport Technology

Department of Civil and Environmental Engineering

University of Illinois at Urbana Champaign

205 N. Mathews, MC-250

Urbana, IL 61801

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

12. Sponsoring Agency Name and Address

U.S. Department of Transportation

Federal Aviation Administration

William J. Hughes Technical Center

Aviation Research Division

Airport Technology Branch

Atlantic City International Airport, NJ 08405

13. Type of Report and Period Covered

Technical Note

14. Sponsoring Agency Code

 ANG-E261

15. Supplementary Notes

The FAA Airport Technology Research & Development Branch COR was Mr. Ryan King.

16. Abstract

Foreign object debris (FOD) and its corresponding damage is a well-recognized threat to aircraft safety. In support of the

Federal Aviation Administration FOD research program, the University of Illinois Center of Excellence for Airport Technology

(CEAT) in cooperation with the staff of the Chicago Department of Aviation, O’Hare International Airport (ORD) Operations, 

initiated an effort to characterize the FOD found on active runways at a major civil airport. The primary objective of the study

was to characterize FOD over time by analyzing the FOD collected by common mechanical FOD removal devices during 

routine runway inspections. The CEAT analysis of FOD collected from runways at ORD showed that FOD was consistently 

present. The majority of the collected FOD samples was predominantly comprised of material types that could be attributed to 

runway pavements, such as asphalt, tar, and concrete. The conclusions in this study are based on empirical analysis and the 

findings in this report follow the interpretative rather than the statistical analysis.

17. Key Words

Foreign object debris, Foreign object damage, Airport 

safety, Runway inspections, Magnet bar, FOD*BOSS

18. Distribution Statement

This document is available to the U.S. public through the National 

Technical Information Service (NTIS), Springfield, Virginia 22161. 

This document is also available from the Federal Aviation

Administration William J. Hughes Technical Center at 

actlibrary.tc.faa.gov.

19. Security Classif. (of this report)

 Unclassified

20. Security Classif. (of this page)

 Unclassified

21. No. of Pages

 89

22. Price

Form DOT F 1700.7 (8-72) Reproduction of completed page authorized
iii

TABLE OF CONTENTS

Page

EXECUTIVE SUMMARY xi

INTRODUCTION 1

BACKGROUND 3

Foreign Object Debris 3

Management of FOD 4

OBJECTIVES 4

METHODS AND MATERIALS 5

Sample Collection 5

Field Processing 6

Laboratory Analysis 8

Characterization of Hazardous Items 11

Analysis of Hazardous Items 12

RESULTS AND DISCUSSION 14

Sampling Campaigns 14

Weight of FOD Samples 19

The FOD Collected on Each Runway 21

Runway 4R-22L 21

Runway 4L-22R 23

Runway 9R-27L 24

Runway 9L-27R 25

Runway 10-28 26

Runway 14R-32L 27

Runway 14L-32R 28

Summary 28

Analysis of FOD Accumulation on Runways Over Time 29

Runway 4R-22L 30

Runway 4L-22R 30

Runway 9R-27L 31

Runway 9L-27R 31

Runway 10-28 32
iv

Runway 14R-32L 32

Runway 14L-32R 33

Analysis by Month 33

Analysis Based on Runway Characteristics 35

Runway Length 35

Taxiway Intersections 36

Construction 37

Review of Hazardous Items in FOD Samples 40

Analysis of Hazardous Items Based on Weight and Size Class 42

Analysis of Hazardous Items Based on Material Type 43

CONCLUSIONS 46

REFERENCES 48

APPENDICES

 A—Foreign Object Debris Items by Collection Method, Counts, and Weights 

 B—Inventory of Hazardous Foreign Object Debris Items 
v 

LIST OF FIGURES

Figure Page

1 Current Runway Configuration at ORD 2

2 A Magnet Bar and an Array of Three FOD*BOSS Units Used for FOD Collection by 

ORD Operations 6

3 Field Sieve With 12-by-12 in. Frame Showing Different Size Screens Used in the 

Initial Sorting of FOD Samples 7

4 Bins of FOD Samples Collected From the FOD*BOSS 7

5 Trash and Debris Collected by ORD Personnel From Non-Runway Surfaces 8

6 Subsample of Small FOD Items Collected by the FOD*BOSS 9

7 Subsample of Medium FOD Items Collected by the FOD*BOSS 10

8 Subsample of Large FOD Items Collected by the FOD*BOSS 10

9 Example of FOD Items Collected by the Magnet Bar 11

10 Examples of Small, Medium, and Large Hazardous Items 13

11 Configuration of Runways During FOD Characterization Sampling Campaigns 14

12 Comparison of FOD Collection Methods by Weight and Date for Runway 4R-22L 22

13 Comparison of FOD Collection Methods by Weight and Date for Runway 4L-22R 23

14 Comparison of FOD Collection Methods by Weight and Date for Runway 9R-27L 24

15 Comparison of FOD Collection Methods by Weight and Date for Runway 9L-27R 25

16 Comparison of FOD Collection Methods by Weight and Date for Runway 10-28 26

17 Comparison of FOD Collection Methods by Weight and Date for Runway 14R-32L 27

18 Comparison of FOD Collection Methods by Weight and Date for Runway 14L-32R 28

19 Average Weight by Runway of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers 29

20 Accumulation of FOD Over Time Intervals on Runway 4R-22L 30

21 Accumulation of FOD Over Time on Runway 4L-22R 31

22 Accumulation of FOD Over Time on Runway 9R-27L 31
vi 

23 Accumulation of FOD Over Time on Runway 9L-27R 32

24 Accumulation of FOD Over Time on Runway 10-28 32

25 Accumulation of FOD Over Time on Runway 14R-32L 33

26 Accumulation of FOD Over Time on Runway 14L-32R 33

27 Average Weight by Month of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers 35

28 Average Weight of FOD Collected From the FOD*BOSS Against Runway Length 36

29 Average Weight of FOD Collected From the Magnet Bar Against Runway Length 36

30 Average Weight of FOD Collected by the FOD*BOSS Against the Number of 

Intersecting Taxiways 37

31 Average Weight of FOD Collected Using the Magnet Bar Against the Number of 

Intersecting Taxiways 37

32 Average Weight of FOD by Runway 38

33 Number of Hazardous FOD Items by Weight Collected on Runway 14L-32R 

During Construction Period 39

34 Number of Hazardous FOD Items by Weight Collected on Runway 14L-32R After 

Construction Period 39

35 Number of Hazardous Items by Weight Collected From Runway 9R-27L During 

Construction 40

36 Number of Hazardous Items by Weight Collected From Runway 9R-27L After 

Construction 40

37 A Total of 1146 Hazardous Items by Size Class 41

38 Average Weight of Hazardous Items by Runway 42

39 Total Weight of all Hazardous Items by Size Class 43

40 Total Number of Hazardous Items by Material Type 44

41 Total Weight of all Hazardous Items by Material Type 45

42 Number of Hazardous Items by Material Type 45

43 Weight of Hazardous Items by Material Type 46
vii 

LIST OF TABLES

Table Page

1 Foreign Object Debris Items of Varying Hazard Levels 12

2 Size Classes of Hazardous Items 12

3 Number of Sampling Campaign Uses for Each FOD Collection Method 15

4 Number of Sampling Campaigns by Runway 15

5 Number of Complete Sampling Campaigns by Runway and Date 16

6 Time Between Sampling Campaigns for Each Runway 17

7 Number of Sampling Campaigns Using FOD*BOSS and/or Magnet Bar 19

8 All FOD Material by Weight and Collection Method for all Sampling Campaigns 19

9 All FOD Material by Weight and Collection Method for Runway 4R-22L 

Sampling Campaigns 22

10 All FOD Material by Weight and Collection Method for Runway 4L-22R 

Sampling Campaigns 23

11 All FOD Material by Weight and Collection Method for Runway 9R-27L 

Sampling Campaigns 24

12 All FOD Material by Weight and Collection Method for Runway 9L-27R 

Sampling Campaigns 25

13 All FOD Material by Weight and Collection Method for Runway 10-28 

Sampling Campaigns 26

14 All FOD Material by Weight and Collection Method for Runway 14R-32L 

Sampling Campaigns 27

15 All FOD Material by Weight and Collection Method for Runway 14L-32R 

Sampling Campaigns 28

16 Average Weight by Month of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers 34

17 Average FOD Weights Based on Runway Proximity to Construction 38

18 Average Weight of FOD by Runway 39

19 Percentage of Total Hazardous Items by Size Class 41
viii

20 Percentage of all Hazardous Items by Weight for Each Size Class 42

21 Percentage of Total Hazardous Items for Each Material Type 43

22 Percentage of all Hazardous Items by Weight for Each Material Type 44
ix/x

LIST OF ACRONYMS

AASHTO American Association of State Highway and Transportation Officials

AC FAA Advisory Circular 

CEAT University of Illinois Center of Excellence for Airport Technology

CDA Chicago Department of Aviation

FAA Federal Aviation Administration

FOD Foreign object debris

NAFPI National Aerospace FOD Prevention, Inc.

ORD Chicago O’Hare International Airport
xi

EXECUTIVE SUMMARY

Foreign object debris (FOD) and foreign object damage are well-recognized threats to aircraft 

safety. Among the long-term efforts in FOD prevention and management, the Federal Aviation 

Administration (FAA) established a research program designed to support advisory circular 

development, develop an FOD database, characterize FOD at airports, identify equipment useful 

in FOD detection, and support continuing safety improvement at airports.

As part of the FAA FOD research program, the University of Illinois Center of Excellence for 

Airport Technology (CEAT) in cooperation with the staff of the Chicago Department of Aviation 

(CDA), Chicago O’Hare International Airport (ORD) Operations, engaged in a study to 

characterize FOD removed during periodic runway inspections conducted by airport personnel. 

The primary objective of the study was to characterize FOD found on an active runway over time 

by analyzing the FOD collected by common mechanical FOD removal devices during routine 

runway inspections. This report provides a summary of FOD collected and the characterization 

of FOD found on ORD runways.

In this study, the CEAT supported 79 sampling campaigns, resulting in the collection of FOD 

samples from ORD’s 7 runways labeled 4R-22L, 4L-22R, 9R-27L, 9L-27R, 10-28, 14R-32L, 

and 14L-32R. Sampling campaigns began in July 20, 2011 and concluded on May 8, 2013. The 

limited availability of CDA equipment and CEAT personnel for FOD collection activities 

hindered the number of inspections/samples collected during the June 2011 to May 2013 period 

for the CEAT assessment. The collection methods used varied based on available resources. In 

some sampling campaigns, three FOD collection methods (i.e., mechanical sweeper, magnet bar, 

and laborers) were employed, while other campaigns involved only one or two of those 

collection methods. Of note, the laborer method collected FOD from non-runway areas, such as 

the grassed areas adjacent to the paved shoulders. In total, 34 sampling campaigns were fully 

supported by all three methods. These 34 samples were used in the more detailed analyses. 

Based on the inspection sequence, FOD sampling data was reviewed to identify any possible 

relationships between time between inspections and FOD sample amounts. Runway inspection 

schedules were not designed to provide fixed intervals between samples so there was variability 

in time between samples for each runway. Time between collections varied between short

intervals, i.e., on the scale of days, to approximately monthly intervals. In some cases, the time 

between samples was approximately 100 to 150 days. A review of inspection interval data was 

unable to provide any relationship between the time between inspections and FOD accumulation. 

Regular maintenance and routine inspections by operations personnel may have affected FOD 

presence, and other mechanisms, such as removal from jet blasts, may have limited the amount 

of collectible FOD on runways during sampling campaigns.

FOD sample data was reviewed to identify differences in FOD amounts over time for a single 

runway and to determine if there is a relationship between airport characteristics (such as runway 

length, the number of taxiway intersections, or construction activity) and the presence and type 

of FOD found. Runway operation, another important factor, was not included in this 

characterization. Analysis of FOD on each runway over time revealed variability in FOD weight 

over time for all runways. It was noted that more metal items were found in winter months. 

Inspections generally produced samples that weighed between 10 lb and 20 lb, but a collection in 

winter 2013 produced a sample weighing almost 50 lb. Examination of winter samples found 
xii

larger asphalt, tar, and concrete items present, which is consistent with the suggestion that high 

FOD weights may be related to freeze/thaw conditions that would produce FOD from runway 

pavements. Runway length and the number of taxiway intersections were also examined. The 

assumption was made that longer runways would produce more FOD, and more intersections 

would lead to increased traffic and increased FOD. However, due to the small sample size,

statistical analysis with a good confidence level could not be performed; hence, analysis found 

no strong relationship between FOD and runway length or number of intersections. Construction 

was also considered, examining runway distance from construction and specific construction 

activity occurring at the Signature Aviation facility. The analysis identified a difference between 

construction and postconstruction FOD samples for Signature Aviation; however, due to the

small sample size, statistical analysis with a good confidence level could not be performed.

Some FOD items were identified as hazardous, i.e., items that could cause damage or could lead 

to aircraft damage. It was determined that hazardous FOD constituted a very small percentage of 

the total FOD collected during the study. Hazardous FOD included small metal items and large 

asphalt, concrete, and tar items, the latter possibly related to the runway surface. Large

hazardous items also included paint particles, where the paint bonded to pavement materials, or 

paint accumulations that produced a single, large particle. A general observation of the FOD 

material collected was that the most common hazardous items were generated from the pavement 

surface. Although rare, other large hazardous FOD items were also collected and recorded.
1

INTRODUCTION

Among the issues related to aircraft safety, few are as well recognized as foreign object debris 

(FOD) and foreign object damage. In aircraft manufacturing, every effort is made to eliminate 

the presence of foreign objects that interfere with safe aircraft operation. Because FOD presents 

such a prevalent issue, the National Aerospace FOD Prevention, Inc. (NAFPI) was created in 

1985 to address foreign object issues in all aspects of aerospace programs (www.nafpi.com). 

Many in the military are familiar with the FOD walk, in which personnel walk down a flightline 

shoulder-to-shoulder to locate and remove foreign objects from all airport areas used by aircraft. 

FOD issues were highlighted in 2000, when FOD contributed to the crash of Air France Flight 

4590, the Concorde supersonic transport aircraft. During this accident, the Concorde ruptured a 

tire on a titanium wear strip lying on the runway. Subsequently, a chunk of the ruptured tire 

debris struck the underside of the aircraft’s wing causing a pressure shockwave that ultimately 

ruptured the aircraft’s fuel tank. This accident focused new attention on FOD in aircraft 

movement areas, particularly the runway. 

The Federal Aviation Administration (FAA) has made long-term efforts in FOD prevention and 

management. In 1996, the FAA issued Advisory Circular (AC) 150/5380-5B on FOD 

management [1]. While NAFPI efforts in developing FOD prevention guidelines are primarily 

directed to manufacturing [2], the FAA has continued efforts addressing FOD at airports. In 

2009, the FAA issued AC 150/5220-24 on FOD detection equipment [3] and replaced AC 

150/5389-B with AC 150/5210-24 to address FOD management [4] in 2010. The FAA also

established a research program directed to FOD issues, which was designed to support AC

development, develop a FOD database, characterize FOD at airports, identify equipment useful 

in FOD management, and support continuing safety improvements related to prevention and 

management of FOD at airports.

The presence of FOD at airports is a well-known problem, but detailed information on type, size, 

weight, frequency, and origin of the FOD is generally lacking. Management efforts have been 

based largely on the results of routine inspections of runways with little attention given to FOD 

characterization. Recent studies on FOD have focused attention on the identification and 

classification of FOD as an increased safety measure at airports. At an FOD assessment 

workshop in 2008, one of the initial studies on FOD at airports was presented that reviewed a

one-year study performed at Charles De Gaulle Airport [5]. The study found an average of 12 

FOD items a month. After the Concorde accident, industry responded by developing airport 

runway FOD detection systems. In 2011, a study by Herricks et al. [6] reviewed FOD items 

detected at Changi International Airport in Singapore and concluded that continuous systems 

provided a real picture of FOD on runways, including identification of items typically too small 

to be regularly observed during normal inspections. These systems provide continuous 

surveillance of runways and support better FOD characterization with operational procedures 

that document all FOD alarms and alerts produced by the system sensors.

As part of the FAA FOD research program, the University of Illinois, Center of Excellence for 

Airport Technology (CEAT) in cooperation with the Chicago Department of Aviation (CDA), 

Chicago O’Hare International Airport (ORD) Operations, performed a study of FOD removed 

during periodic runway inspections. ORD is a large, complex international airport that is 

recognized as one of the busiest in the world. ORD is in the midst of a major modernization 
2

effort that will eventually replace the present runway crossing configuration with parallel 

east/west runways, figure 1. Consequently, this study was conducted in the midst of a multipleyear construction project at ORD. The study reviews efforts in FOD characterization and is

supported by the FAA William J. Hughes Technical Center, ANG-E261, Airport Safety R&D 

Section.

Figure 1. Current Runway Configuration at ORD

In early 2011, the CDA requested assistance from CEAT in developing and implementing a 

more comprehensive FOD management program at ORD. The program would take advantage of 

CEAT’s capabilities in FOD detection technologies and FOD management to support a 

comprehensive FOD management effort involving the CDA, airlines, and other tenants at ORD.
3

As part of routine inspection activities, ORD operations personnel close one runway a week for 

an intensive daylight inspection. This closure includes a careful inspection of all infrastructure

on the runway and a focused FOD collection effort on the runway using tow-behind equipment 

consisting of either an Aerosweep FOD*BOSS mechanical sweeper and/or a magnet bar,

supplemented by personnel removing FOD from grassed areas along the edge of the runway. 

CEAT took advantage of this existing operational strategy to develop a long-term FOD 

characterization program. CEAT researchers participated in the runway inspections, processed 

collected FOD items, and analyzed FOD from 79 runway inspections conducted from July 2011 

to May 2013. This report summarizes the FOD collected and characterized from runways at 

ORD. 

BACKGROUND

FOREIGN OBJECT DEBRIS.

The presence of foreign objects in the airport environment presents a major hazard to aircraft 

safety often with high pecuniary consequences. NAFPI defines foreign object debris and foreign 

object damage as follows:

Foreign object debris is any substance, debris, or article alien to the vehicle or 

system that could potentially cause damage. Foreign object damage is any 

damage attributed to a foreign object that can be expressed in physical or 

economic terms which may or may not degrade the product’s required safety 

and/or performance characteristics. [2]

FOD can occur as a part of the manufacture or maintenance of aircraft; or it can occur in the 

airport environment as the result of the loss of parts from aircraft, pavement cracking, wildlife, 

ice and salt accumulation, and construction debris. In either case, the damage effects of 

unremoved FOD can be costly.

FOD hazards on airports are considered to be comparable to those associated with 

birds and winter operations. Costs to one major airline average $15,000 per 

aircraft, which represents an industry cost of over $60 million per year. This is 

the equivalent of one new medium-sized transport category jet. Tests and 

experience have shown that foreign objects on airport pavements can be readily 

ingested by aircraft engines, resulting in engine failure. Debris can also become 

lodged in mechanisms, affecting the operation of landing gear, flaps, etc. [1]

Typical foreign objects include the following: aircraft and engine fasteners (nuts, 

bolts, washers, safety wire, etc.); mechanics’ tools; flight line metal (nails,

personnel badges, pens, pencils, etc.); stones and sand; paving materials; pieces of 

wood; plastic and/or polyethylene materials; paper products; and ice formations in 

operational areas. [1]

Procedures to eliminate FOD must address two fundamental requirements: (a) the 

avoidance of debris and (b) the removal of debris from airport pavements. [1]
4

The existing programs at airports to manage FOD focus on airport activities and require a 

tailored FOD prevention program, as described in FAA AC 150/5380-5B [1]. The AC makes the 

following recommendations for inspections and FOD collection equipment:

Make inspections of operational areas at least once each day, with additional 

inspections being made in construction areas and immediately after any aircraft or 

ground vehicle accident or incident or any spill of material which may cause 

slippery conditions. [1]

Consider using specialized brooms, magnets, and vacuum-type machines to clean 

aircraft operational areas as well as runway and taxiway safety areas. The 

acquisition of power sweepers and/or vacuums for use in FOD prevention is 

considered appropriate. The National Aerospace FOD Prevention, Inc. FOD 

Prevention Industry Guideline recommends that sweeper brushes with metal 

bristles or spines not be used. Plastic or combination plastic/metal bristles may be 

appropriate, but the user should consult the equipment manufacturer for specific 

recommendations. Regardless of the equipment used, a thorough check of the 

pavement should be conducted at the conclusion of the sweeping procedure. [1]

MANAGEMENT OF FOD.

Most airports use a combination of visual inspection and mechanical devices designed to remove 

FOD. These devices may simply remove FOD by sweepers or blowers or may be purposedesigned to remove and retain FOD. Two of the most common devices in the latter category 

include the FOD*BOSS and magnet bars. The FOD*BOSS uses a patented design based on 

friction to collect FOD items as the device is pulled along a paved surface. The use of friction in 

the collection process creates the potential that the device may dislodge particles from the 

surface that may not be readily movable without the friction pad passage. Further, this device 

flips particles into a retention area, which may differentially retain items of different size or may 

fill and lose items. Magnet bars collect only ferrous metal items that are attracted to the magnet. 

The FOD*BOSS and magnet bar are routinely used at airports, and the samples collected by 

these devices are considered appropriate for a general characterization of FOD. A few airports 

use new continuous surveillance systems to manage FOD, but these are not common to date.

OBJECTIVES

The primary purpose of the ORD FOD characterization study was to add to the understanding of 

FOD on airport runways. The study provided a picture of nearly two years of FOD removed 

from ORD runways during periodic inspections. The study supplements ongoing efforts at other 

airports that use continuous FOD detection technologies with runway inspection techniques that 

are commonly available to all airports. 
5

The primary objective of the study was to characterize FOD over time by analyzing the FOD 

collected by common mechanical FOD removal devices. To meet this objective, the CEAT 

study sought to

develop procedures for field processing of FOD collected by mechanical FOD removal 

equipment, i.e., a FOD*BOSS and a magnet bar.

develop procedures to separate FOD by size and to quantify FOD by weight.

provide a characterization of FOD at a large international airport that included

- a general sense of FOD on runways, including the identification of common FOD 

items and variability in FOD removed over time.

- the presence of hazardous items and any trends in occurrence of those items over 

time.

provide a detailed analysis of FOD removed from ORD runways that sought to

- review sampling issues in FOD characterization.

- relate FOD to runway characteristics.

- analyze the accumulation of FOD over time.

- identify seasonal variation in the amounts of FOD collected.

METHODS AND MATERIALS

SAMPLE COLLECTION.

For this study, FOD was collected by CDA personnel during routine runway inspections using 

equipment regularly used in FOD management at ORD, a magnet bar and a FOD*BOSS 

(figure 2). 

In addition to the FOD collected by this equipment, CDA personnel also removed FOD manually 

from the grassed areas adjacent to the runway. FOD samples included material retrieved from 

the magnet bar and the FOD*BOSS and bags of material collected from grassed areas. In 

general, each sampling campaign proceeded from one end of the runway to the other, with 

equipment sweeps executed to cover the entire runway surface. CDA personnel retrieved FOD 

from both sides of the runway. Once the sweeps were complete, CEAT researchers emptied the 

FOD collection devices and processed samples. Sample processing included field and laboratory 

components and varied according to collection device. 
6

Figure 2. A Magnet Bar (top) and an Array of Three FOD*BOSS Units (bottom) Used for FOD 

Collection by ORD Operations

FIELD PROCESSING. Field processing followed procedures specific to each sampling method.

At the end of each sampling campaign, the material attached to the magnet bar and in the 

FOD*BOSS was collected and processed by CEAT researchers.
7

FOD collected from the FOD*BOSS was passed through a sorting device in the field, 

figure 3. The device had two screens, 0.25 in. (.64 cm) and 0.50 in. (1.27 cm), that 

separated the FOD into three size categories:

- Small—FOD less than 0.25 in. (0.64 cm) 

- Medium—FOD between 0.25 in. (0.64 cm) and 0.50 in. (1.27 cm)

- Large—FOD greater than 0.50 in. (1.27 cm)

Figure 3. Field Sieve With 12-by-12 in. Frame Showing Different Size Screens Used in the 

Initial Sorting of FOD Samples

Material from the magnet bar was not sorted.

Each category of size-separated FOD and the unsorted material from the magnet bar were

then weighed (reported in pounds and ounces), labeled, and placed into plastic bins, as 

shown in figure 4.

Figure 4. Bins of FOD Samples Collected From the FOD*BOSS
8

FOD collected from CDA personnel from non-runway surfaces (typically grassed areas 

adjacent to the runway) was consolidated, weighed, labeled, and placed into plastic bins, 

as shown in figure 5.

Figure 5. Trash and Debris Collected by ORD Personnel From Non-Runway Surfaces

LABORATORY ANALYSIS. The collected FOD was returned to the CEAT laboratory for 

analysis.

FOD items considered a hazard to aircraft were removed from the FOD samples and 

characterized as a separate group, termed “hazardous items.” (See Characterization of 

Hazardous Items section.)

Samples periodically contained grass clippings that, when possible, were separated from 

the other FOD items.

All hazardous items were measured for length, width, and height in inches and weight in 

pounds and ounces. 

Smaller FOD items were weighed in aggregate.

Digital photographs were taken of all hazardous items. 

The FOD samples were often large, so subsampling techniques were used in some analyses. The 

procedure used was based on the American Association State Highway and Transportation 

Officials Standard (AASHTO), Designation: C702-98 “Standard Practice for Reducing Samples 

of Aggregate to Testing Size.”[7]
9

The following procedure was used for the FOD*BOSS samples. 

A size-sorted plastic bin of FOD was selected and the entire sample was poured into a 

Gilson portable mechanical splitter.

The sample was divided three times using the AASHTO standard method [7].

The final division was spread onto a grid and photographed.

Using this procedure, a representative subsample of the FOD collected by the FOD*BOSS was 

produced for each of the 79 sampling campaigns. The subsamples are shown in figures 6

through 8. The weight of the subsample was then used for the detailed comparative analysis.

Figure 6. Subsample of Small FOD Items Collected by the FOD*BOSS
10

Figure 7. Subsample of Medium FOD Items Collected by the FOD*BOSS

Figure 8. Subsample of Large FOD Items Collected by the FOD*BOSS

For FOD collected by the magnet bar, detailed analysis used the entire sample; no subsampling 

was performed due to the smaller quantity of items collected. Magnet bar samples were 

weighed, then spread out on a grid and photographed, as shown in figure 9. For the trash and 

debris samples, items were reviewed, hazardous items removed, and then all FOD was 

photographed in aggregate. 
11

Figure 9. Example of FOD Items Collected by the Magnet Bar

CHARACTERIZATION OF HAZARDOUS ITEMS.

Because items that present a hazard to aircraft are particularly problematic, specific effort was 

made during the FOD analysis to identify hazardous items. Any FOD items with dimensions 

greater than 1 in. (2.5 cm) were considered hazardous. However, hazards cannot be specifically 

related to size or material. For example, dense objects of small size can create a hazard, while 

large items, such as paper or plastic sheets, may not. CEAT developed a characterization of 

FOD hazards, listed in table 1. Hazardous item characterization was based on reporting by

James Stephan of Delta Airlines, informal reporting of FOD hazards from airports, and the 

experience of CEAT in FOD studies since 2004 [8 through 11]. Using this hazardous FOD item 

characterization, CEAT separated hazardous FOD items from the samples for further analysis. 

The large fraction of the FOD*BOSS sample and the magnet bar sample were used to identify 

hazardous runway FOD. Hazardous items in this study included: 

Any items listed in table 1

FOD items with long dimension greater than 1 in. (2.5 cm) 

Pieces of pavement with any dimension greater than 1 in. (2.5 cm)

Paint chips over 1 in. (2.5 cm)

Broken glass pieces

Large metal filings and bristles
12

Table 1. Foreign Object Debris Items of Varying Hazard Levels

FOD Item

Expected 

Hazard

Frequency of 

Occurrence

1. Small piece of concrete High Frequent

2. Standard lug nut from service vehicle High Frequent

3. Roller bearing High Frequent

4. Chunk of rubber Low Frequent

5. Mechanic’s wrench High Frequent

6. Fuel cap High Frequent

7. Cotter key Moderate Frequent

8. Plastic bottle/bottle cap Low Frequent

9. Strapping material Moderate Frequent

10. Expansion joint material Low Frequent

11. Construction material (galvanized nails

or sheetrock screws)

Moderate Based on 

construction activity

12. Runway infrastructure part (piece of 

runway light or signage)

High Infrequent

13. Small fasteners Moderate Frequent

14. Metal strip High Infrequent

15. Fiberglass door Moderate Frequent

ANALYSIS OF HAZARDOUS ITEMS.

For the analysis of hazardous FOD items, large items or items that met hazardous item criteria

were separated from the non-hazardous items. The weight and dimensions of each hazardous 

item was added to the database, and items were classified by size based on their greatest 

dimension. Some items were weighed in aggregate due to their small size and did not have a 

length attributed to them. These were classified as Other. Greatest dimensions for each size 

class are provided in table 2. Figure 10 shows examples of small, medium, and large hazardous 

items. In addition to size, each item was also characterized based on material type and the 

possible source was noted. Appendix B provides a table describing all hazardous items by date, 

runway location, weight, size, and type of material.

Table 2. Size Classes of Hazardous Items 

Size Class Size in Inches

Small x<1.5

Medium 1.5=<x<3.0

Large x=>3.0

Other No length

Note: x denotes an item’s largest dimension.
13

Smalllkj

Figure 10. Examples of Small, Medium, and Large Hazardous Items
14

The methods used to characterize FOD and identify relationships among airport infrastructure 

and operations to FOD characteristics were descriptive, not statistical. CEAT determined that 

the sampling program adopted from ORD runway inspections did not meet study design 

requirements in the areas of sample replication, sampling interval, and overall sample 

consistency for statistical analysis. CEAT has analyzed the data to characterize and compare

results. CEAT was also able to define FOD categories and relate FOD characteristics to 

potential sources and/or operational conditions.

RESULTS AND DISCUSSION

SAMPLING CAMPAIGNS.

A total of 79 sampling campaigns, i.e., individual FOD inspections, were conducted between 

July 20, 2011, and May 8, 2013. Sampling campaigns were conducted on runways 4R-22L, 

4L-22R, 9R-27L, 9L-27R, 10-28, 14R-32L, and 14L-32R, as shown in figure 11. The sampling 

was conducted under dry pavement conditions, during daylight hours.

Figure 11. Configuration of Runways During FOD Characterization Sampling Campaigns
15

All sampling campaigns were based on CDA schedules for runway inspections. Not all CDA 

runway inspections involved all FOD collection devices or procedures. As a result, some 

sampling campaigns involved three FOD collection methods (FOD*BOSS mechanical sweeper, 

magnet truck, and laborers), while others involved one or two of those three collection methods. 

Nineteen sampling campaigns used one FOD collection method.

Twenty-six sampling campaigns used two FOD collection methods.

Thirty-four sampling campaigns used three FOD collection methods.

Table 3 shows the total number of times each method was used during the 79 sampling 

campaigns. 

Table 3. Number of Sampling Campaign Uses for Each FOD Collection Method

FOD Collection 

Method

Total Number of 

Sampling Campaign Uses

FOD*BOSS 58

Magnet Bar 48

Laborers 64

The number of sampling campaigns conducted on each runway also varied, as shown in table 4.

Table 4. Number of Sampling Campaigns by Runway

Runway

Number of 

Sampling 

Campaigns

4R-22L 12

4L-22R 11

9R-27L 12

9L-27R 12

10-28 12

14R-32L 12

14L-32R 8

Total Sampling 

Campaigns

79

CEAT designated the 34 sampling campaigns where all FOD collection methods were used as 

complete sampling campaigns, which provided the best basis for sample comparisons. Table 5

lists the complete sampling campaigns by runway and date of campaign.
16

Table 5. Number of Complete Sampling Campaigns by Runway and Date

Runway

Sampling 

Campaigns

Using All 

Three 

Methods Dates

4R-22L 7 09/22/11

12/22/11

02/23/12

04/10/12

08/23/12

01/09/13

03/27/13

4L-22R 6 11/10/11

12/07/11

01/10/12

02/28/12

04/24/12

07/05/12

9R-27L 5 10/05/11

12/13/11

02/01/12

05/10/12

11/08/12

9L-27R 4 08/18/11

10/12/11

01/18/12

03/07/12

10-28 5 08/04/11

01/04/12

02/15/12

04/05/12

05/15/12

14R-32L 4 02/09/12

05/24/12

12/19/12

02/14/13

14L-32R 3 09/29/11

01/24/12

03/13/12

Not all CDA runway inspections were supported by CEAT. The availability of CEAT staff, 

CDA staff, and CDA equipment produced a data record that had inconsistent sampling method 

usage. Thus, there were variations in the FOD collection methods used and variable time 

intervals between sampling campaigns. Table 6 provides a list of the days between sampling 
17

campaigns for each runway. Asterisks mark complete sampling campaigns where all three

methods (FOD*BOSS, magnet bar, and laborers used) are utilized.

Table 6. Time Between Sampling Campaigns for Each Runway

Runway Date

Number of Days 

Between Sampling 

Campaigns Runway Date

Number of Days 

Between Sampling 

Campaigns

4R-22L 07/20/11 – 9R-27L 09/01/11 –

09/22/11* 64 10/05/11* 34

12/22/11* 91 12/13/11* 69

02/23/12* 63 02/01/12* 50

04/10/12* 47 03/21/12 49

05/30/12 50 05/10/12* 50

06/14/12 15 08/07/12 89

07/17/12 33 09/12/12 36

08/23/12* 37 11/08/12* 57

10/16/12 54 04/03/13 146

01/09/13* 85 04/30/13 27

03/27/13* 77

4L-22R 08/11/11 – 9L-27R 08/18/11* –

11/10/11* 91 10/12/11* 55

12/07/11* 27 11/22/11 41

01/10/12* 34 01/18/12* 57

02/28/12* 49 03/07/12* 49

04/24/12* 56 04/19/12 43

06/27/12 64 06/07/12 49

07/05/12* 8 10/11/12 126

09/06/12 63 11/13/12 33

09/26/12 20 01/31/13 79

01/23/13 119 03/21/13 49

05/08/13 48

*Complete sampling campaigns, i.e., means all three methods were utilized.
18

Table 6. Time Between Sampling Campaigns for Each Runway (Continued) 

Runway Date

Number of Days 

Between Sampling 

Campaigns Runway Date

Number of Days 

Between Sampling 

Campaigns

10-28 08/04/11* – 14L32R08/25/11 –

09/14/11 41 09/29/11* 35

11/01/11 48 12/01/11 63

01/04/12* 64 01/24/12* 54

02/15/12* 42 03/13/12* 49

04/05/12* 50 05/03/12 51

05/15/12* 40 12/05/12 216

07/11/12 57 04/24/13 140

08/30/12 50

10/04/12 35

03/07/13 154

04/16/13 40

14R32L11/15/11 –

12/28/11 43

02/09/12* 43

03/29/12 49

05/24/12* 56

06/20/12 27

07/26/12 36

08/15/12 20

11/01/12 78

12/19/12* 48

02/14/13* 57

04/09/13 54

*Complete sampling campaigns, i.e., means all three methods were utilized.

The FOD*BOSS and magnet bar are devices used specifically for runway collection, and they 

are the focus of runway FOD analyses. Table 7 lists the number of times each device was used 

and the number of times both were used simultaneously.
19

Table 7. Number of Sampling Campaigns Using FOD*BOSS and/or Magnet Bar

Runway

Number of Sampling 

Campaigns Using 

FOD*BOSS

Number of Sampling 

Campaigns Using 

Magnet Bar

Number of Sampling 

Campaigns Using 

FOD*BOSS and Magnet Bar

4R-22L 12 9 9

4L-22R 9 7 7

9R-27L 7 7 6

9L-27R 8 5 5

10-28 7 8 6

14R-32L 7 6 4

14L-32R 7 8 5

WEIGHT OF FOD SAMPLES.

A general summary of the weight of FOD items collected during this study is provided in table 8. 

These results include all FOD collected on runways and in grassed areas for each sampling 

campaign. Asterisks indicate complete sampling campaigns. Although FOD from grassed areas 

often produced the most FOD by weight, the focus of further analysis is on runway samples, 

which present the greatest direct hazard to aircraft safety.

Table 8. All FOD Material by Weight (lb) and Collection Method for all Sampling Campaigns

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large Magnet Bar Laborers

07/20/11 4.88 1.49 0.48 0.11 –

08/04/11* 2.93 0.98 1.53 0.15 52.68

08/11/11 12.81 3.06 5.93 0.12 –

08/18/11* 5.23 5.46 3.03 0.45 1.01

08/25/11 13.40 9.52 3.41 2.02 –

09/01/11 9.69 6.57 5.22 0.85 –

09/14/11 – – – 0.04 10.18

09/22/11* 6.05 3.27 1.12 0.04 6.66

09/29/11* 6.50 11.87 27.45 0.08 11.68

10/05/11* 3.11 4.66 2.42 0.35 1.50

10/12/11 11.34 4.14 3.24 0.34 0.60

11/01/11 3.97 3.18 2.57 – –

11/10/11* 5.67 6.20 6.03 0.43 1.01

11/15/11 3.56 6.28 1.76 – 1.95

11/22/11 – – – – 0.20

12/01/11 3.61 2.89 0.98 – 3.88

12/07/11* 10.86 5.26 2.67 0.60 3.51

*Complete sampling campaigns
20

Table 8. All FOD Material by Weight (lb) and Collection Method for all Sampling Campaigns

(Continued)

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large Magnet Bar Laborers

12/13/11* 6.41 4.91 1.12 0.45 16.67

12/22/11* 4.92 3.01 2.84 0.82 2.45

12/28/11 – – – 0.20 5.49

01/04/12* 1.60 5.36 6.00 0.19 1.47

01/10/12* 4.48 8.23 1.11 0.58 0.65

01/18/12* 1.28 0.94 2.19 0.36 –

01/24/12* 7.63 6.25 0.97 0.91 3.31

02/01/12* 12.30 7.51 2.93 1.86 10.97

02/09/12* 6.68 9.84 2.84 1.75 1.05

02/15/12* 4.79 1.50 1.36 0.11 8.05

02/23/12* 5.25 2.60 1.44 2.48 3.74

02/28/12* 11.74 9.72 2.88 1.89 8.73

03/07/12* 1.76 1.88 1.82 0.68 3.48

03/13/12* 4.63 3.06 1.58 1.15 0.72

03/21/12 – – – 2.89 7.97

03/29/12 – – – 0.18 5.37

04/05/12* 5.59 4.68 2.93 0.26 –

04/10/12* 4.12 4.12 1.34 0.26 –

04/19/12 2.91 3.23 2.78 0.61 –

04/24/12* 1.66 3.16 1.16 0.12 –

05/03/12 10.63 7.72 3.96 – 5.11

05/10/12* 7.22 6.17 2.78 0.29 3.94

05/15/12* 2.80 2.71 2.60 0.14 11.48

05/24/12* 2.25 4.83 1.33 0.09 6.86

05/30/12 3.99 5.03 2.00 0.02 –

06/07/12 2.31 1.32 1.16 – 0.12

06/14/12 5.48 3.05 1.57 – 16.46

06/20/12 – – – – 2.31

06/27/12 0.62 0.99 0.57 – 7.20

07/05/12* 3.34 4.15 2.13 0.07 2.21

07/11/12 – – – – 3.33

07/17/12 6.58 6.75 2.76 – –

07/26/12 – – – – 4.36

08/07/12 5.73 5.71 2.40 – 1.10

08/15/12 0.96 0.57 0.31 – 0.49

08/23/12* 27.59 13.11 3.01 0.05 3.47

08/30/12 – – – 0.04 8.73

09/06/12 – – – – 1.29

*Complete sampling campaigns
21

Table 8. All FOD Material by Weight (lb) and Collection Method for all Sampling Campaigns

(Continued)

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large Magnet Bar Laborers

09/12/12 – – – – 3.07

09/26/12 1.72 1.92 1.34 – 3.08

10/04/12 8.80 3.13 2.99 – 3.94

10/11/12 1.06 0.75 0.96 – 1.25

10/16/12 1.61 2.70 0.45 – 0.33

11/01/12 2.60 3.65 4.29 – 6.18

11/08/12* 12.57 13.09 5.23 0.43 8.94

11/13/12 0.90 0.73 0.50 – 0.11

12/05/12 2.76 3.01 1.16 – 0.33

12/19/12* 7.31 8.65 2.39 0.19 0.65

01/09/13* 4.45 4.80 1.46 0.03 0.28

01/23/13 – – – – 3.05

01/31/13 – – – – –

02/14/13* 19.67 20.32 7.90 3.78 1.27

03/07/13 – – – 2.94 –

03/21/13 – – – – –

03/27/13* 15.32 15.76 4.03 1.17 4.08

04/03/13 – – – – –

04/09/13 – – – – 1.98

04/16/13 – – – – 30.92

04/24/13 – – – – 5.74

04/30/13 – – – – 7.69

05/08/13 – – – – 1.88

*Complete sampling campaigns

THE FOD COLLECTED ON EACH RUNWAY.

FOD was collected on runways 4R-22L, 4L-22R, 9R-27L, 9L-27R, 10-28, 14R-32L, and 14L32R at ORD using the FOD*BOSS, the magnet bar, and manually along the grassed areas

outside each runway by ORD personnel. Tables 9 through 15 and figures 12 through 18 provide 

summaries for each runway. Tables provide data on the weight of FOD listed by collection 

method. Figures 12 through 18 show data only for the FOD*BOSS and the magnet bar. Where 

no weight is listed, the collection device was not used. The weight of grass clippings is provided 

when available. Grass presence in FOD samples was inconsistent and often seasonal, but it 

contributed weight to FOD samples. 

RUNWAY 4R-22L. Table 9 and figure 12 show that the weights of small- and medium-sized

FOD items increased in August 2012 and March 2013 for Runway 4R-22L. The August 2012 

collection of over 27 lb was the heaviest weight recorded of any size class in all sampling 

campaigns. The weight of metal collected was variable over time with the heaviest weight 
22

recorded during the winter months, i.e., December, February and March, in this case. The 

weight of FOD collected by laborers was greatest in June 2012; however, this could reflect 

accumulation over time because no collections were performed in April and May. Grass 

clippings were most common during summer months.

Table 9. All FOD Material by Weight (lb) and Collection Method for Runway 4R-22L 

Sampling Campaigns

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large

Magnet 

Bar Laborers

Grass 

Clippings

07/20/11 4.88 1.49 0.48 0.11 – –

09/22/11* 6.05 3.27 1.12 0.04 6.66 –

12/22/11* 4.92 3.01 2.84 0.82 2.45 –

02/23/12* 5.25 2.60 1.44 2.48 3.74 –

04/10/12* 4.12 4.12 1.34 0.26 – –

05/30/12 3.99 5.03 2.00 0.02 – 0.05

06/14/12 5.48 3.05 1.57 – 16.46 0.19

07/17/12 6.58 6.75 2.76 – – 0.09

08/23/12* 27.59 13.11 3.01 0.05 3.47 0.05

10/16/12 1.61 2.70 0.45 – 0.33 –

01/09/13* 4.45 4.80 1.46 0.03 0.28 –

03/27/13* 15.32 15.76 4.03 1.17 4.08 –

*Complete sampling campaigns

Figure 12. Comparison of FOD Collection Methods by Weight and Date for Runway 4R-22L 
23

RUNWAY 4L-22R. The results for sampling campaigns for Runway 4L-22R showed generally 

greater FOD weights earlier in the study, with lower FOD weights later. Small items were 

predominant through February 2012, and medium items were predominant in later collections. 

Metal presence was more common during winter months, i.e., November 2011 through February 

2012. As shown in table 10 and figure 13, the heaviest weight for FOD material collected 

manually by personnel was recorded in February 2012 and June 2012. 

Table 10. All FOD Material by Weight (lb) and Collection Method for Runway 4L-22R 

Sampling Campaigns

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large

Magnet 

Bar Laborers

Grass 

Clippings

08/11/11 12.81 3.06 5.93 0.12 – 1.77

11/10/11* 5.67 6.20 6.03 0.43 1.01 –

12/07/11* 10.86 5.26 2.67 0.60 3.51 –

01/10/12* 4.48 8.23 1.11 0.58 0.65 –

02/28/12* 11.74 9.72 2.88 1.89 8.73 –

04/24/12* 1.66 3.16 1.16 0.12 0.00 –

06/27/12 0.62 0.99 0.57 – 7.20 0.02

07/05/12* 3.34 4.15 2.13 0.07 2.21 0.05

09/06/12 – – – – 1.29 0.64

09/26/12 1.72 1.92 1.34 – 3.08 0.01

01/23/13 – – – – 3.05 –

*Complete sampling campaigns

Figure 13. Comparison of FOD Collection Methods by Weight and Date for Runway 4L-22R
24

RUNWAY 9R-27L. As shown in table 11 and figure 14, sampling campaigns on Runway 9R27L small-sized FOD*BOSS items had significant weight in September 2011, February 2012, 

and November 2012. Metal was present in small items, in all samples collected by the magnet 

bar except for August 2012, with heaviest weights occurring in February 2012 and March 2012. 

The heaviest sample of FOD was collected in November 2012, with both small- and mediumsized FOD weighing a combined 25 lb. Laborers collected the most FOD in December 2011 

(16.67 lb) and February 2012 (10.97 lb). In other sampling campaigns, laborers collected 

between 1 lb and 9 lb of FOD.

Table 11. All FOD Material by Weight (lb) and Collection Method for Runway 9R-27L 

Sampling Campaigns

Date

FOD*BOSS 

Small

FOD*BOSS 

Medium

FOD*BOSS 

Large

Magnet 

Bar Laborers

Grass 

Clippings

09/01/11 9.69 6.57 5.22 0.85 – 0.91

10/05/11* 3.11 4.66 2.42 0.35 1.50 0.06

12/13/11* 6.41 4.91 1.12 0.45 16.67 –

02/01/12* 12.30 7.51 2.93 1.86 10.97 –

03/21/12 – – – 2.89 7.97 –

05/10/12* 7.22 6.17 2.78 0.29 3.94 0.31

08/07/12 5.73 5.71 2.40 – 1.10 0.66

09/12/12 – – – – 3.07 –

11/08/12 12.57 13.09 5.23 0.43 8.94 –

04/03/13 – – – – – –

04/30/13 – – – – 7.69 –

*Complete sampling campaigns

Figure 14. Comparison of FOD Collection Methods by Weight and Date for Runway 9R-27L
25

RUNWAY 9L-27R. As shown in table 12 and figure 15, sampling campaigns from Runway 9L27R produced more total FOD early in the study, with 13.72 lb. and 18.72 lb. for August 2011

and October 2011. The weights of FOD in other months ranged from 2 lb. to 9 lb. The magnet 

bar was not used in the June 2012, October 2012, and November 2012 sampling campaigns. The 

heaviest weight sample collected by laborers for this runway was recorded in March 2012, when 

3.47 lb. were collected. Other samples collected by laborers generally weighed less than 2 lb.

Table 12. All FOD Material by Weight (lb) and Collection Method for Runway 9L-27R 

Sampling Campaigns

Date

FOD*BOSS

Small

FOD*BOSS

Medium

FOD*BOSS

Large

Magnet 

Bar Laborers

Grass 

Clippings

08/18/11* 5.23 5.46 3.03 0.45 1.01 –

10/12/11* 11.34 4.14 3.24 0.34 0.60 0.01

11/22/11 – – – – 0.20 –

01/18/12* 1.28 0.94 2.19 0.36 – –

03/07/12* 1.76 1.88 1.82 0.68 3.48 –

04/19/12 2.91 3.23 2.78 0.61 – 1.69

06/07/12 2.31 1.32 1.16 – 0.12 –

10/11/12 1.06 0.75 0.96 – 1.25 0.02

11/13/12 0.90 0.73 0.50 – 0.11 –

01/31/13 – – – – – –

03/21/13 – – – – – –

05/08/13 – – – – 1.88 –

*Complete sampling campaigns

Figure 15. Comparison of FOD Collection Methods by Weight and Date for Runway 9L-27R
26

RUNWAY 10-28. As shown in table 13 and figure 16, FOD samples from Runway 10-28 

produced total weights, by size class, of 6 lb or less. The heaviest weight collected was 8.80 lb

for small items in October 2012. The lightest weights for metal FOD collected by the magnet 

bar were recorded in September 2011 and August 2012; the heaviest weight of metal collected

(2.94 lb) was recorded in March 2013. The heaviest sample that laborers collected weighed

52.68 lb, recorded in August 2011, and a 30.92-lb sample collected by the laborers was recorded

in March 2013. Other laborer-collected samples ranged from 3 to 11 lb.

Table 13. All FOD Material by Weight (lb) and Collection Method for Runway 10-28 

Sampling Campaigns

Date

FOD*BOSS

Small

FOD*BOSS

Medium

FOD*BOSS

Large

Magnet 

Bar Laborers

Grass 

Clippings

08/04/11* 2.93 0.98 1.53 0.15 52.68 0.11

09/14/11 – – – 0.04 10.18 –

11/01/11 3.97 3.18 2.57 – – –

01/04/12* 1.60 5.36 6.00 0.19 1.47 –

02/15/12* 4.79 1.50 1.36 0.11 8.05 –

04/05/12* 5.59 4.68 2.93 0.26 0.00 –

05/15/12* 2.80 2.71 2.60 0.14 11.48 –

07/11/12 – – – – 3.33 –

08/30/12 – – – 0.04 8.73 –

10/04/12 8.80 3.13 2.99 – 3.94 –

03/07/13 – – – 2.94 – –

04/16/13 – – – – 30.92 –

*Complete sampling campaigns

Figure 16. Comparison of FOD Collection Methods by Weight and Date for Runway 10-28
27

RUNWAY 14R-32L. As shown in table 14 and figure 17, FOD samples from Runway 14R-32L 

were variable, with the heaviest FOD*BOSS weight collected in February 2013, when the small 

items recorded weighed 19.67 lb, medium items weighed 20.32 lb, and large items weighed 7.90 

lb. However, because the FOD*BOSS was not emptied before the runway inspection, FOD from 

other areas of the airport were likely included, making this sample an outlier. Total FOD weight 

collected by the FOD*BOSS ranged from 1.81 lb in August 2012 to 19.36 lb in February 2012. 

In February 2012, the magnet bar collected metal samples weighing 1.75 lb but a year later, in 

February 2013, 3.78 lb were collected. Samples collected by laborers on all dates consisted of 

variable weights of less than 7 lb.

Table 14. All FOD Material by Weight (lb) and Collection Method for Runway 14R-32L 

Sampling Campaigns

Date

FOD*BOSS

Small

FOD*BOSS

Medium

FOD*BOSS

Large

Magnet 

Bar Laborers

Grass 

Clippings

11/15/11 3.56 6.28 1.76 – 1.95 –

12/28/11 – – – 0.20 5.49 –

02/09/12* 6.68 9.84 2.84 1.75 1.05 –

03/29/12 – – – 0.18 5.37 –

05/24/12* 2.25 4.83 1.33 0.09 6.86 –

06/20/12 – – – – 2.31 0.63

07/26/12 – – – – 4.36 –

08/15/12 0.96 0.57 0.31 – 0.49 0.33

11/01/12 2.60 3.65 4.29 – 6.18 –

12/19/12* 7.31 8.65 2.39 0.19 0.65 –

02/14/13* 19.67 20.32 7.90 3.78 1.27 –

04/09/13 – – – – 1.98 –

*Complete sampling campaigns

Figure 17. Comparison of FOD Collection Methods by Weight and Date for Runway 14R-32L
28

RUNWAY 14L-32R. As shown in table 15 and figure 18, the FOD samples from Runway 14L32R for September 2011 contained 11.87 lb of medium-sized FOD and 27.45 lb of large-sized 

FOD. Metals present in magnet bar samples weighed less than 2 lb. Samples collected by 

laborers weighed from less than 1 lb to nearly 12 lb.

Table 15. All FOD Material by Weight (lb) and Collection Method for Runway 14L-32R 

Sampling Campaigns

Date

FOD*BOSS

Small

FOD*BOSS

Medium

FOD*BOSS

Large

Magnet 

Bar Laborers

Grass 

Clippings

08/25/11 13.40 9.52 3.41 2.02 – –

09/29/11* 6.50 11.87 27.45 0.08 11.68 –

12/01/11 3.61 2.89 0.98 – 3.88 –

01/24/12* 7.63 6.25 0.97 0.91 3.31 –

03/13/12* 4.63 3.06 1.58 1.15 0.72 –

05/03/12 10.63 7.72 3.96 – 5.11 0.62

12/05/12 2.76 3.01 1.16 – 0.33 –

04/24/13 – – – – 5.74 –

*Complete sampling campaigns

Figure 18. Comparison of FOD Collection Methods by Weight and Date for Runway 14L-32R

SUMMARY. 

Figure 19 shows the average weight of FOD collected for each runway by collection method. 

The weight of the FOD*BOSS FOD samples was heavier for Runways 14R-32L, 9R-27L, and 

14L-32R, averaging between 16 lb and 19 lb. of FOD. Magnet bar FOD samples averaged a 

pound or less, and laborer-collected FOD samples averages ranged from 1 lb to 6 lb. Note that 
29

the average weight was determined by the sum of the collected FOD weight divided by the 

number of times the equipment was present.

Figure 19. Average Weight by Runway of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers

In summary, FOD was collected during all sampling campaigns using different methods that 

produced different types of samples. The FOD*BOSS samples were separated into size classes,

with small-sized FOD items generally predominant although in some cases, medium- (February 

2013) and large-sized (September 2011) FOD items were predominant. FOD sampling 

suggested no specific trends in FOD type; however, magnet bar samples, which on average were 

reasonably consistent for all runways, often contained metal brush pieces and recorded heavier 

weights in winter samples. Also, FOD sampling found less FOD weight on Runway 9L-27R. 

ANALYSIS OF FOD ACCUMULATION ON RUNWAYS OVER TIME.

The runway sampling campaigns over time provided the opportunity to address several timerelated questions, including how much FOD is generated over time. There appeared to be two 

main sources of FOD on runways:

FOD generated by the runway, such as paint and pavement materials

FOD carried to the runway from a wide range of sources, including aircraft and vehicles, 

construction activity, or wind-blown materials

Long-term sampling on the same runways during this study provided an opportunity to evaluate 

if there were any consistent trends in the accumulation of FOD over time. Although it was not 

possible to schedule runway inspections to produce specific sampling intervals, the campaigns 

did provide repeat sampling over varying time intervals. One runway (4L-22R) was sampled 

with only eight days between inspections. Fifteen inspections involved runways where there 

were approximately 30 days between inspections. In two instances, inspections were performed 

on only one runway for three consecutive months. These campaign intervals were used to
30

analyze FOD generation over time. This analysis recognizes that there was no control over 

operations and, considering previous analyses of FOD by runway, FOD weights varied over 

time. Figures 20 through 26 illustrate the increase or decrease in total FOD weights for each 

runway in the sequential sampling; the number of days between samples is provided at the top of 

the bar for each date. As expected, the increase in days between samples produced larger sample 

weights of FOD.

In summary, sampling campaigns occurred at intervals of as little as 15 days and as many as 216 

days. Because CEAT did not participate in all sampling campaigns, the most reliable samples 

for assessment of FOD accumulation were those samples in which sequential monthly samples 

were available, in particular, those runways that had a sequence of three monthly samples. 

RUNWAY 4R-22L. For Runway 4R-22L, the shortest interval between sampling campaigns 

was 15 days, with the two following samples collected at 33 and 37 days after the previous 

sample, as shown in figure 20. The largest interval was 91 days. In June 2012, the FOD weight 

increased from the previous collection done only 15 days before. The two samples after June 

2012 showed a drop in FOD weight for July 2012 from the previous sample 33 days before, and 

a large increase for August 2012 from the sample 37 days earlier. In addition, FOD weight

measurements were much lower in October 2012, but showed a slight increase in January 2013 

and an increase in March 2013 that showed weight measurements close to those in August 2012. 

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 20. Accumulation of FOD Over Time on Runway 4R-22L

RUNWAY 4L-22R. As shown in figure 21, sampling campaigns on Runway 4L-22R included a 

three-month sequence with samples in November 2011, December 2011, and January 2012, at 

intervals of 27 and 34 days for the December and January sample campaigns. FOD weight

measurements were approximately 10 lb per sample for April 2012 through January 2013, which 

were much less than earlier samples with FOD weighing in the 20-lb range. 
31

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 21. Accumulation of FOD Over Time on Runway 4L-22R

RUNWAY 9R-27L. For Runway 9R-27L, the shortest interval between sampling campaigns 

was 27 days, and the largest interval was 89 days, as shown in figure 22.

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 22. Accumulation of FOD Over Time on Runway 9R-27L

RUNWAY 9L-27R. For Runway 9L-27R, the shortest interval between sampling campaigns 

was 33 days, and the largest interval was 126 days, as shown in figure 23. The sampling 

campaign in November 2012 was the only campaign for Runway 9L-27R that occurred within 

approximately one month of the previous campaign. All other campaigns on this runway had 

intervals longer than 40 days.
32

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 23. Accumulation of FOD Over Time on Runway 9L-27R

RUNWAY 10-28. The FOD sampling campaigns for Runway 10-28 had variable and generally 

long intervals between campaigns. The shortest interval between sampling campaigns was 35 

days, and the largest interval was 154 days, as shown in figure 24.

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 24. Accumulation of FOD Over Time on Runway 10-28

RUNWAY 14R-32L. The sampling campaign sequence for Runway 14R-32L occurred 

approximately in monthly intervals—June 2012, July 2012, and August 2012—with little change 

in FOD weight for the three sampling campaigns, as shown in figure 25. There was no clear 

trend in FOD accumulation for Runway 14R-32L. The shortest interval between sampling 

campaigns was 20 days, and the largest interval was 78 days.
33

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 25. Accumulation of FOD Over Time on Runway 14R-32L

RUNWAY 14L-32R. For Runway 14L-32R, the shortest interval between sampling campaigns 

was 35 days, and the largest interval was 216 days, as shown in figure 26. There was one 

sampling campaign, September 2011, for Runway 14L-32R within approximately one month of 

the previous campaign, August 2011. The samples from the September 2011 campaign showed 

an increase of nearly double the weight of the previous sample. Other campaigns with intervals 

of 216 and 140 days showed little change in FOD weight.

Note: The number on the top of each bar in the chart is the number of days between sampling campaigns.

Figure 26. Accumulation of FOD Over Time on Runway 14L-32R

ANALYSIS BY MONTH.

To assess the possible differences in FOD weight collected related to seasonal conditions or 

general operational activities at ORD, the FOD sampling data was compiled by month for each 
34

runway, table 16 and figure 27. Table 16 provides a summary of the number of sampling

campaigns for each month during the study and the average weight of FOD by sampling device

or method for that month. The averages ranged from 1.66 lb to 47.88 lb for the FOD*BOSS, 

0.02 lb to 3.78 lb for the magnet bar, and 0.49 lb to 13.42 lb for laborers. Appendix A details 

FOD items by date count as well as minimum, average, and maximum weights and standard 

deviations.

Table 16. Average Weight by Month of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers

Month

Number of Sampling Campaigns 

per Month by Sampling Method

Average of Total Weight per 

Sampling Method (lb)

FOD*BOSS

Magnet 

Bar Laborers FOD*BOSS

Magnet 

Bar Laborers

2011

July 1 1 1 6.85 0.11 –

August 4 4 4 16.82 0.69 13.42

September 4 4 4 19.44 0.25 7.13

October 2 2 2 14.45 0.35 1.05

November 4 4 4 9.80 0.11 0.79

December 5 5 5 9.90 0.41 6.40

2012

January 4 4 4 11.51 0.51 1.36

February 5 5 5 16.67 1.62 6.51

March 4 4 4 3.68 1.23 4.39

April 5 5 5 11.05 0.51 –

May 5 5 5 13.20 0.11 5.48

June 4 4 4 4.27 – 6.52

July 4 4 4 6.43 0.02 2.47

August 4 4 4 14.85 0.02 3.45

September 3 3 3 1.66 – 2.48

October 3 3 3 7.48 – 1.84

November 3 3 3 14.52 0.14 5.08

December 2 2 2 12.64 0.10 0.49

2013

January 3 3 3 3.57 0.01 1.11

February 1 1 1 47.88 3.78 1.27

March 3 3 3 11.71 1.37 1.36

April 5 5 5 – – 9.27

May 1 1 1 – – 1.88

Total 79 79 79 10.47 0.43 4.28
35

Figure 27 plots the results shown in table 16 and shows the relative consistency within collection

methods of the FOD in samples. February 2013 shows an exception to this, when the FOD 

collected in the FOD*BOSS weighed over 47 lb. Depending on winter weather conditions, it is 

possible for freeze/thaw conditions to influence runway-produced FOD. A review of runway 

results for February indicates a peak in weight measurements for large FOD from Runway 14L32R in February 2012 and February 2013, and high overall FOD*BOSS weight measurements 

for Runways 4L-22R and 9R-27L. There was no clear trend evident in higher weight

measurements in the magnet bar samples; although the greatest weight measurement occurred in 

months when metal bristles from snow removal equipment may have been present. 

Figure 27. Average Weight by Month of FOD Collected Using the FOD*BOSS, Magnet Bar, 

and Laborers

ANALYSIS BASED ON RUNWAY CHARACTERISTICS.

Other factors that may influence FOD sample characteristics include runway length, runway 

operations, taxiway crossings, or construction and the frequency of airport inspections. To 

determine if runway characteristics could be related to FOD sampling results, FOD sampling 

results were analyzed relative to each of the characteristics.

RUNWAY LENGTH. Figure 28 shows the results of the comparison of FOD*BOSS sample 

weight to runway length. Figure 29 shows similar results for magnet bar samples.
36

Figure 28. Average Weight of FOD Collected From the FOD*BOSS Against Runway Length

Figure 29. Average Weight of FOD Collected From the Magnet Bar Against Runway Length

Figures 28 and 29 do not show any relationship between FOD weight and runway length

TAXIWAY INTERSECTIONS. Another runway characteristic that could influence FOD 

samples is the number of taxiway intersections. An increase in intersections could create

potential for aircraft and airport vehicles to influence FOD on the runway. In figures 30 and 31,

the weight of FOD from the FOD*BOSS and the magnet bar, respectively, were plotted against

the number of intersecting runways. In both instances, the weight of FOD collected in sampling

campaigns showed no trend in relation to the number of taxiway intersections. 
37

Figure 30. Average Weight of FOD Collected by the FOD*BOSS Against the Number of 

Intersecting Taxiways

Figure 31. Average Weight of FOD Collected Using the Magnet Bar Against the Number of 

Intersecting Taxiways

CONSTRUCTION. Due to the O’Hare Modernization Program, there has been major 

construction at ORD for some years. The FOD characterization studies were initiated during a 

period when construction activities were at a high level. In March 2011, construction began on 

Runway 10R-28L. The construction was near an active runway, Runway 4R-22L. Additional 

construction was initiated on the Signature Terminal in June 2011 and completed in August 

2012. Runways 4L-22R, 14L-32R, and 9R-27L were located near this construction. Other 

construction was noted near Runways 14R, 32L, and 10-28. The following runways were near 

the primary construction site.

4R-22L—Construction on 10R-28L

4L-22R—Enabling construction for 9C-28C

14L-32R—Signature Construction

9R-27L—Signature Construction 
38

Of the runways included in the FOD sampling campaigns, the following runways were not near 

primary construction sites.

9L-27R

10-28

14R-32L 

Table 17 and figure 32 provide the results of a comparison between average FOD weight

measurements of samples from runways near construction and the average FOD weight

measuremnets from runways not near construction. It was assumed that construction activity 

near a runway could influence the amount and/or weight FOD collected. However, no such 

relationship between proximity to construction was determined.

Table 17. Average FOD Weights Based on Runway Proximity to Construction

Near Construction Not Near Construction

Runway

Average of 

All FOD (lb) Runway

Average of 

All FOD (lb)

4R-22L 18.41 10-28 17.22

9R-27L 17.88 14R-32L 13.51

14L-32R 20.99 9L-27R 6.00

4L-22R 13.99

Figure 32. Average Weight of FOD by Runway

The Signature Aviation Project was located near Runways 14L-32R and 9R-27L. During the 

construction period, six sampling campaigns were completed. After construction, two sampling 

campaigns were completed on Runway 14L-32R and five on Runway 9R-27L. Table 18 shows a 

reduction in FOD weight collected after construction. No definite conclusions can be made 

based on the high variability of the data.
39

Table 18. Average Weight of FOD by Runway

Runway

Average Weight

Jun 2011–Aug 2012

Average Weight

Aug 2012–Present

14L-32R 25.82 6.5

9R-27L 22.07 13.19

Although no conclusions could be drawn from average weight analysis, further analysis 

examined the different material type of the FOD during and after construction, figures 33 

through 36. During the construction period, FOD samples from Runway 14L-32R had more 

metal items than samples collected after construction. The items present were small, producing a 

low average weight. Paint chips had the highest average weight during construction, although 

average weight of all categories was similar during construction and after construction. 

Figure 33. Number of Hazardous FOD Items by Weight Collected on Runway 14L-32R During 

Construction Period

Figure 34. Number of Hazardous FOD Items by Weight Collected on Runway 14L-32R After

Construction Period 
40

Figure 35. Number of Hazardous Items by Weight Collected From Runway 9R-27L

During Construction

Figure 36. Number of Hazardous Items by Weight Collected From Runway 9R-27L

After Construction

In summary, the analysis of FOD in relation to runway characteristics found no comparative 

differences associated with runway length, number of runway intersections, nor adjacent 

construction activity.

REVIEW OF HAZARDOUS ITEMS IN FOD SAMPLES.

As part of the overall analysis process, each FOD sample was examined. FOD items meeting the 

definition of hazardous items were separated, characterized, and recorded. Appendix B provides 

a detailed inventory of all hazardous FOD samples. Although the general criterion was size 

greater than 1 inch, smaller items, particularly metal items, were identified as hazardous and size 

classification was consistent with items listed in table 19. The analysis of hazardous FOD items 

has been completed for 55 of the 78 sampling campaigns. The total number of FOD items 

characterized as hazardous in these 55 campaigns was 1146, with 399 of the items having at least 

one dimension greater than one inch. In this data set, 996 hazardous items had size designations

(i.e., classified as hazardous due to their size) and 150 items were characterized as other. The 
41

total weight of hazardous items in all categories was 33.61 lb. Table 19 lists the relative percent 

of hazardous FOD items, and figure 37 shows a plot of the data.

Table 19. Percentage of Total Hazardous Items by Size Class 

Size Class

Percentage of Total

Hazardous Items

(%)

Small 49.04

Medium 26.44

Large 11.43

Other 13.09

Figure 37. A Total of 1146 Hazardous Items by Size Class

The result of hazardous item analysis provides a basis for connecting general FOD collections 

with the potential hazard of FOD to safe aircraft operations. Figure 38 compares the average 

weight of hazardous FOD items by runway. While the average weights of all FOD (figure 32) 

ranged from 6 lb to nearly 21 lb, the weights of hazardous items ranged from an average of 0.02

lb to 0.04 lb. Clearly, hazardous items make up a small part of the overall FOD materials 

collected by weight during each sampling campaign.
42

Figure 38. Average Weight of Hazardous Items by Runway

ANALYSIS OF HAZARDOUS ITEMS BASED ON WEIGHT AND SIZE CLASS. Hazardous 

FOD items were also analyzed by weight and size class. Table 20 presents the relative percent of 

hazardous FOD items by weight for each size class, and figure 39 illustrates this data. 

Table 20. Percentage of all Hazardous Items by Weight for Each Size Class

Size Class

Percentage of all 

Hazardous Items

by Weight

(%)

Small 13.07

Medium 38.88

Large 19.03

Other 29.02
43

Figure 39. Total Weight of all Hazardous Items by Size Class

A comparison between tables 19 and 20 shows that small-sized FOD items were present in the 

greatest number, but medium-sized FOD items had the greatest aggregate weight. Both large 

and other FOD item categories had fewer items, but relatively high aggregate weights. 

ANALYSIS OF HAZARDOUS ITEMS BASED ON MATERIAL TYPE. The hazardous items 

were also characterized by material type. Table 21 lists FOD items by material type and the 

percentage of total hazardous FOD items for these categories. Figure 40 illustrates these results. 

Table 21. Percentage of Total Hazardous Items for Each Material Type

Material Type

Percentage of 

Total Hazardous 

Items

(%)

Metal 59.69

Rubber 7.24

Concrete 6.72

Plastic 6.11

Asphalt 5.06

Tar 4.54

Paint 3.75

Other 3.32

Glass 1.57

Wood 0.87

Paper 0.52

Animal 0.26

Cloth 0.26

Leather 0.09
44

Figure 40. Total Number of Hazardous Items by Material Type

Table 22 lists the percentage of the total hazardous FOD items’ weight in pounds by material 

type, and figure 41 shows total weights by material types. 

Table 22. Percentage of all Hazardous Items by Weight for Each Material Type 

Material Type

Percentage of all 

Hazardous Items 

by Weight

(%)

Metal 22.95

Paint 21.48

Concrete 21.00

Asphalt 16.38

Tar 5.97

Rubber 4.62

Glass 3.07

Other 2.10

Plastic 1.39

Wood 0.55

Cloth 0.24

Paper 0.18

Animal 0.05

Leather 0.01
45

Figure 41. Total Weight of all Hazardous Items by Material Type

Figure 42 shows the number of hazardous items in each material type.

Figure 42. Number of Hazardous Items by Material Type

Figure 43 shows weight of items in each material type.
46

Figure 43. Weight of Hazardous Items by Material Type

The analysis by material type provides further insight into hazardous FOD items. Rubber, 

concrete, plastic, and asphalt were present comprising greater than 5% of the total; the remaining 

material types comprised less than 5% of the total. In terms of weight, paint particles had the 

highest aggregate weight of nearly 23 lb; but concrete, metal, and asphalt followed closely with 

weights of 17 lb to 21 lb. Evaluating material type by size class, metal FOD items had the 

greatest numbers in all size classes, with nearly 90% of the small items. In the medium size

class, cloth, asphalt, and rubber were also present in higher weights. Rubber and tar were well 

represented in large weights. Metal items and paint particles accounted for the highest weight in 

the Other category. In the Other category, paint accounted for 78% of the total weight, while

metal was 14% of the weight. Although more than 60% of the total items were metal, these 

items were generally small.

CONCLUSIONS

Note: The conclusions in this study are based on descriptive anlaysis, and the findings in this 

report follow the interpretative rather than statistical analyses.

As part of the Federal Aviation Administration’s (FAA) long-term efforts in the prevention and 

management of foreign object debris (FOD), the University of Illinois Center of Excellence for 

Airport Technology (CEAT), in cooperation with the Chicago Department of Aviation, O’Hare 

Operations staff, engaged in a sudy to characterize FOD at a major airport, Chicago-O’Hare 

International Airport (ORD). The primary objective of this study was to characterize FOD using 

common mechanical FOD removal devices, the FOD*BOSS sweeper and a magnet bar, during 

routine runway inspections; manual FOD collection was also employed during the study. The 

FOD*BOSS uses friction to collect FOD items as the device is pulled along a paved surface. 

The use of friction in the collection process creates the potential that the device may dislodge 

particles from the surface that may not be readily movable without the friction pad passage. 
47

Further, the FOD*BOSS flips particles into a retention area, which may retain items of different 

size or may overfill and lose items. The magnet bar collects only ferrous metal items that are 

attracted to the magnet. With these considerations in mind, the use of the FOD*BOSS and 

magnet bar are commonly used at airports for the removal of FOD, and the samples collected by 

these devices are considered appropriate for a general characterization of FOD. The conclusions 

in this study are based on descriptive anlaysis. The data from ORD FOD collections are used to 

generally characterize collected FOD at one airport.

In this study, CEAT supported a total of 79 sampling campaigns, resulting in FOD samples from 

ORD Runways 4R-22L, 4L-22R, 9R-27L, 9L-27R, 10-28, 14R-32L, and 14L-32R. Sampling 

campaigns began on July 20, 2011 and continued through May 8, 2013. The availability of the 

Chicago Department of Aviation equipment and CEAT personnel for FOD collection activities 

varied, which was a limitation of the study. The number of collection methods used for each 

sampling campaign also varied. In some campaigns, all three FOD collection methods 

(FOD*BOSS, magnet truck, and laborers) were used, while others involved only one or two 

collection methods. In total, 34 sampling campaigns were completed using all 3 methods. These 

34 samples were used in the more detailed analyses. Another limitation of the study was the 

time intervals between inspections, which were varied due to operational needs. In a number of 

instances, collection intervals were sometimes very short and others were very long. Also, FOD 

presence and weight counts were sometimes affected by regular maintenance and inspection as 

well as other mechanisms, such as jet blast removal, which tends to limit FOD on runways.

Metal FOD items were found to be more common in winter months. Inspections generally 

produced samples that wieghed between 10 and 20 lb, but a collection in winter 2013 produced a 

sample weighing almost 50 lb. An examination of winter samples found larger items composed 

of asphalt, tar, and concrete present, which is consistent with the suggestion that high FOD 

weights may be related to freeze/thaw conditions that would produce FOD from runway 

pavements. Analysis was also performed to examine the potential relationships between FOD 

and runway length and the number of taxiway intersections. The assumption was made that 

longer runways would produce more FOD, and the more intersections would lead to increased 

traffic and increased FOD. However, a statistically valid conclusion could not be reached due to 

small sample size. Analysis also considered construction, examining runway distance from 

construction and specific construction activity at Signature Aviation. The analysis identified 

differences between construction and postconstruction FOD samples for Signature Aviation; 

however, differences could not be confirmed statistically due to small sample size.

Certain FOD items were identified as hazardous items. Analysis performed on these hazardous 

items found that hazardous FOD constituted a very small percentage of the total FOD collected. 

Small, metal items made up a majority of hazardous FOD. Larger items included asphalt, 

concrete, and tar items related to the runway surface. Paint particles were common among the 

larger hazardous items, i.e., paint bound to pavement materials or paint accumulations that led to 

large particle production. Other large hazardous FOD items were observed, but their origin was 

random.
48

In summary:

Over the course of 22 months, 79 FOD sampling campaigns were conducted on 7 

different runways.

Of the 79 sampling campaigns, 34 included all sample collection methods (i.e.,

FOD*BOSS, magnet truck, and laborers). 

The total number of FOD items identified as hazardous was 1146.

The total weight of FOD items identified as hazardous was 537.9 lb.

A total of 1180.27 lb. of FOD were collected during the study.

In terms of the material type, over 60% of hazardous FOD items were metal and small in 

size.

In terms of weight, the small size category consisted of metals; the medium category

consisted of concrete and asphalt; and the large category consisted of tar, asphalt, 

concrete, and glass items. 

The most common, larger hazardous items collected in the study were possibly generated 

from the pavement surface because they were comprised of asphalt, concrete and tar.

Hazardous FOD constituted a very small percentage of the total FOD collected.

REFERENCES

1. Federal Aviation Administration, “Debris Hazards at Civilian Airports,” Advisory 

Circular (AC) 150/5380-5B, July 5, 1996.

2. National Aerospace FOD Prevention, Inc. (NAFPI), “FOD Prevention Guideline,” July 

2000, http://www.nafpi.com/nafpiguideline.pdf (last visited October 24, 2014).

3. Federal Aviation Administration, “Airport Foreign Object Debris (FOD) Detection 

Equipment,” AC 150/5220-24, September 30, 2009.

4. Federal Aviation Administration, “Airport Foreign Object Debris (FOD) Management,”

AC 150/5210-24, September 30, 2010.

5. EUROCONTROL Workshop, “Information Paper on French Study on Automatic FOD 

Detection Systems,” Second Workshop for the Assessment of Automatic FOD Detection,

Brussels, Belgium, June 9-10, 2008.
49/50

6. Herricks, E.E., Woodworth, E., and Koh, M.S., “Long Term FOD Detection from a 

Continuous Runway Scanning Technology,” 32nd National Aerospace FOD Prevention 

Conference, Dallas, Texas, August 16-18, 2011.

7. Designation: C702-98 “Standard Practice for Reducing Samples of Aggregate to Testing 

Size,” American Association of State Highway and Transportation Officials, 444 North 

Capital Street NW, Suite 225, Washington, DC, 20001.

8. Herricks, E.E., Woodworth, E., and Patterson, Jr., J., “Performance Assessment of a 

Hybrid Radar and Electro-Optical Foreign Object Debris Detection System,” FAA report 

DOT/FAA/TC-12/22, June 2012.

9. Herricks, E.E., Lazar, P. III, Woodworth, E., and Patterson, Jr., J., “Performance 

Assessment of an Electro-Optical-Based Foreign Object Debris Detection System,” FAA 

report DOT/FAA/AR-11/13, March 2012.

10. Herricks, E.E., Woodworth, E., Majumdar, Sid., and Patterson, Jr., J., “Performance 

Assessment of a Mobile, Radar-Based Foreign Object Debris Detection System,” FAA 

report DOT/FAA/AR-11/12, September 2011.

11. Herricks, E.E., Woodworth, E., Majumdar, Sid., and Patterson, Jr., J., “Performance 

Assessment of a Radar-Based Foreign Object Debris Detection System,” FAA report 

DOT/FAA/AR-10/33, February 2011.
A-1

DateFOD*BOSS CountMagnet Bar CountLaborers CountWeight Total (FOD*BOSS Minimum 

lb)

Weight Total (FOD*BOSS Average 

lb)

Weight Total (FOD*BOSS Maximum 

lb)

Weight (Standard Deviation 

FOD*BOSS

lb)

Minimum WeightMagnet Bar

Total 

(lb)(Average Weight Total Magnet Bar

lb)

(Maximum Weight Total Magnet Bar 

lb)

Weight (Standard Deviation Magnet Bar

lb)

WeightLaborers Minimum 

Total (lb)

Laborers Average Weight Total (lb)

Weight Total (Laborers Maximum 

lb)

Standard 

Laborers

Deviation 

Weight (lb)

2011

July111 6.85 6.85 6.85 0.00 48.00 48.00 48.00 0.00

––– N/A

August444 5.43 16.82 26.33 9.21 53.00 311.25 917.00 409.63 0.00 13.42 52.68 26.18

September444 0.00 19.44 45.82 19.65 18.00 115.00 387.00 181.49 0.00 7.13 11.68 5.20

October222 10.19 14.45 18.72 6.03 156.00 157.00 158.00 1.41 0.60 1.05 1.50 0.64

November444 0.00 9.80 17.90 7.41 196.00 196.00 196.00 0.00 0.00 0.79 1.95 0.89

December555 0.00 9.90 18.79 6.89 91.00 234.75 373.00 118.76 2.45 6.40 16.67 5.85

2012

January444 4.41 11.51 14.86 4.80 86.00 230.75 411.00 140.09 0.00 1.36 3.31 1.43

February555 7.65 16.67 24.34 7.72 51.00 734.60 1126.00 403.49 1.05 6.51 10.97 4.02

March444 0.00 3.68 9.26 4.52 83.00 556.25 1312.00 534.50 0.72 4.39 7.97 3.06

April555 5.98 11.05 17.56 4.45 55.00 231.20 590.00 216.59 0.00 0.00 0.00 0.00

May555 8.11 13.20 22.31 6.03 10.00 61.25 131.00 51.19 0.00 5.48 11.48 4.19

June444 0.00 4.27 10.10 4.36

––– N/A 0.12 6.52 16.46 7.25

July444 0.00 6.43 16.10 7.88 32.00 32.00 32.00 0.00 0.00 2.47 4.36 1.87

August444 0.00 14.85 43.71 20.20 18.00 20.50 23.00 3.54 0.49 3.45 8.73 3.75

September333 0.00 1.66 4.98 2.87 1.29 2.48 3.08 1.03

APPENDIX A—FOREIGN OBJECT DEBRIS ITEMS BY 

COLLECTION METHOD, COUNTS, AND WEIGHTS
A-2

DateFOD*BOSS CountMagnet Bar CountLaborers CountWeight Total (FOD*BOSS Minimum 

lb)

Weight Total (FOD*BOSS Average 

lb)

Weight Total (FOD*BOSS Maximum 

lb)

Weight (Standard Deviation FOD*BOSS

lb)

Magnet Bar Minimum Weight Total (lb)

Magnet Bar Average Weight Total (lb)

Weight Total (Magnet Bar Maximum 

lb)

Magnet Bar Standard Deviation Weight (lb)

WeightLaborers Minimum 

Total (lb)

Laborers Average Weight Total (lb)

Weight Total (Laborers Maximum 

lb)

Weight (Standard Deviation Laborers

lb)

October333 2.77 7.48 14.92 6.52

––– N/A 0.33 1.84 3.94 1.88

November333 2.12 14.52 30.89 14.79 196.00 196.00 196.00 0.00 0.11 5.08 8.94 4.52

December222 6.92 12.64 18.35 8.08 87.00 87.00 87.00 0.00 0.33 0.49 0.65 0.23

2013

January333 0.00 3.57 10.71 6.18 14.00 14.00 14.00 0.00 0.00 1.11 3.05 1.69

February111 47.88 47.88 47.88 0.00 1715.00 1715.00 1715.00 0.00 0.00 1.27 1.27 0.00

March333 0.00 11.71 35.12 20.28 532.00 933.50 1335.00 567.81 0.00 1.36 4.08 2.36

April555

––– N/A––– N/A 0.00 9.27 30.92 12.48

May111

––– N/A––– N/A 1.88 1.88 1.88 0.00

Total 7979 79 0.00 10.47 47.88 10.82 0.00 320.33 1715.00 405.24 0.00 4.28 52.68 7.40
B-1

APPENDIX B—INVENTORY OF HAZARDOUS FOREIGN OBJECT DEBRIS ITEMS

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

07/20/11 4R-22L Bird bit 0.035274 1.25 1 0.5 Animal

07/20/11 4R-22L Metal fragment 0.035274 1.5 0.375 0.125 Metal

07/20/11 4R-22L Screw 0.141096 1.125 0.375 0.375 Metal

07/20/11 4R-22L Screw 0.105822 0.875 0.375 0.375 Metal

07/20/11 4R-22L Screw 0.070548 0.625 0.25 0.25 Metal

07/20/11 4R-22L Metal BB 0.070548 0.25 0.25 0.25 Metal

07/20/11 4R-22L Square metal fragment 0.070548 0.75 0.75 0.125 Metal

07/20/11 4R-22L Coiled metal wire 0.035274 0.75 0.5 0.125 Metal

07/20/11 4R-22L Plastic wire cover 0.035274 1 0.25 0.25 Plastic

07/20/11 4R-22L Plastic knife 0.105822 6.25 0.5 0.125 Plastic

07/20/11 4R-22L Nut 0.105822 0.375 0.375 0.25 Metal

07/20/11 4R-22L Bolt 0.070548 0.375 0.375 0.375 Metal

07/20/11 4R-22L Luggage zipper 0.17637 1.5 0.5 0.125 Metal

07/20/11 4R-22L Luggage zipper 0.17637 1.75 0.75 0.125 Metal

08/04/11 10-28 Paper trash 0.458562 – – – Paper

08/04/11 10-28 Asphalt chunk 2.363358 3 2 1 Asphalt

08/04/11 10-28 Asphalt chunk 1.834248 2.375 1.25 1.125 Asphalt

08/04/11 10-28 Concrete chunk 2.64555 2.125 1.75 1.25 Concrete

08/04/11 10-28 Roll electrical tape 1.23459 2 2 0.75 Plastic

08/04/11 10-28 Runway joint material 0.564384 3.625 1 0.75 Rubber

08/04/11 10-28 Plastic tie tag 0.105822 7 3 0.125 Plastic

08/04/11 10-28 Bent metal wire 0.070548 2.25 1.125 0.125 Metal

08/04/11 10-28 Washer 0.035274 0.625 0.625 0.125 Metal

08/04/11 10-28 Washer 0.035274 0.625 0.625 0.125 Metal

08/04/11 10-28 Washer 0.035274 0.625 0.625 0.125 Metal

08/04/11 10-28 Bobby pin 0.035274 2 0.625 0.125 Metal

08/04/11 10-28 Bobby pin 0.035274 2 0.375 0.125 Metal

08/04/11 10-28 Leather strap 0.035274 2 0.5 0.125 Leather

08/04/11 10-28 Screw 0.141096 0.125 0.375 0.125 Metal

08/04/11 10-28 Screw 0.070548 0.625 0.375 0.125 Metal

08/04/11 10-28 Nut 0.282192 0.75 0.75 0.375 Metal

08/04/11 10-28 Luggage lock 0.811302 0.875 0.75 0.25 Metal

08/04/11 10-28 Metal fitter piece 0.70548 1 0.75 0.5 Metal

08/04/11 10-28 Metal piece 0.035274 0.375 0.375 0.125 Metal

08/04/11 10-28 Flattened metal piece 0.035274 0.875 0.375 0.125 Metal

08/04/11 10-28 Curved metal piece 0.035274 0.75 0.25 0.125 Metal

08/11/11 4L-22R Glass pieces 0.88185 1 1 1 Glass

08/11/11 4L-22R Large paint chips 6.737334 6.5 6.5 6.5 Paint

08/11/11 4L-22R Paper trash 0.35274 – – – Paper

08/11/11 4L-22R Asphalt chunk 3.35103 2.375 1.875 1.25 Asphalt

08/11/11 4L-22R Asphalt chunk 2.045892 1.875 1.625 1.125 Asphalt

08/11/11 4L-22R Asphalt chunk 0.564384 1.5 1.125 0.75 Asphalt

08/11/11 4L-22R Concrete chunk 0.811302 1.5 1.25 0.875 Asphalt

08/11/11 4L-22R Concrete chunk 0.776028 1.375 1 0.75 Concrete

08/11/11 4L-22R Tar strip 0.17637 2.5 0.75 0.375 Tar
B-2

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

08/11/11 4L-22R Tar strip 0.458562 5.375 1 0.125 Tar

08/11/11 4L-22R Animal dropping 0.070548 2.875 0.5 0.5 Animal

08/11/11 4L-22R Porous concrete 2.433906 2 1.75 1.5 Concrete

08/11/11 4L-22R Porous concrete strip 0.740754 3.625 0.75 0.5 Concrete

08/11/11 4L-22R Runway light dome 12.69864 3.375 3.625 6.625 Glass

08/11/11 4L-22R Screw 0.070548 0.625 0.375 0.375 Metal

08/11/11 4L-22R Metal hose joint 0.070548 0.5 0.375 0.375 Metal

08/11/11 4L-22R Metal rotator 0.105822 0.625 0.375 0.375 Metal

08/11/11 4L-22R Washer 0.17637 0.875 0.875 0.125 Metal

08/11/11 4L-22R Nut 0.282192 0.5 0.5 0.5 Metal

08/11/11 4L-22R Metal BB 0.070548 0.25 0.25 0.25 Metal

08/11/11 4L-22R Nut 0.035274 0.375 0.375 0.125 Metal

08/11/11 4L-22R Broken valve cap 0.035274 0.5 0.5 0.25 Metal

08/11/11 4L-22R Plastic roller 0.035274 0.75 0.75 0.375 Plastic

08/11/11 4L-22R Metal wire 0.035274 9.5 0.125 0.125 Metal

08/11/11 4L-22R Guitar string 0.211644 41.125 0.125 0.125 Metal

08/18/11 9L-27R Concrete chunk 1.552056 1.375 1.25 1.125 Concrete

08/18/11 9L-27R Concrete chunk 1.552056 1.5 1.125 1 Concrete

08/18/11 9L-27R Concrete flake 0.564384 1.625 1.5 0.5 Concrete

08/18/11 9L-27R Concrete flake 0.634932 1.625 1.25 0.625 Concrete

08/18/11 9L-27R Concrete flake 0.52911 1.625 1.25 0.25 Concrete

08/18/11 9L-27R Expansion joint 

material

0.105822 1.75 0.5 0.25 Rubber

08/18/11 9L-27R Expansion joint 

material

0.246918 3.25 0.5 0.25 Rubber

08/18/11 9L-27R Expansion joint 

material

0.211644 3.625 0.5 0.25 Rubber

08/18/11 9L-27R Expansion joint 

material

0.282192 4.325 0.5 0.25 Rubber

08/18/11 9L-27R Expansion joint 

material

0.599658 7.5 0.5 0.25 Rubber

08/18/11 9L-27R Broken knife blade 0.17637 2 0.75 0.125 Metal

08/18/11 9L-27R Broken pocket knife 2.610276 4.125 1 0.375 Metal

08/18/11 9L-27R Rubber housing 0.17637 1.5 1.125 0.5 Rubber

08/18/11 9L-27R Metal fragment 0.035274 0.875 0.25 0.25 Metal

08/18/11 9L-27R Screw 0.105822 0.875 0.375 0.375 Metal

08/18/11 9L-27R Screw 0.070548 0.625 0.25 0.25 Metal

08/18/11 9L-27R Screw 0.035274 0.625 0.375 0.375 Metal

08/18/11 9L-27R Screw 0.070548 0.5 0.325 0.325 Metal

08/18/11 9L-27R Screw 0.070548 0.625 0.25 0.25 Metal

08/18/11 9L-27R Nut 0.070548 0.375 0.375 0.25 Metal

08/18/11 9L-27R Metal rotator 0.070548 0.5 0.375 0.375 Metal

08/18/11 9L-27R Washer 0.035274 0.625 0.625 0.125 Metal

08/18/11 9L-27R Washer 0.035274 0.625 0.25 0.125 Metal

08/18/11 9L-27R Ribbed washer 0.035274 0.625 0.625 0.125 Metal

08/18/11 9L-27R Paint chips 0.564384 – – – Paint
B-3

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

08/18/11 9L-27R Metal bristles 0.070548 – – – Metal

08/18/11 9L-27R Broken glass 0.17637 – – – Glass

08/18/11 9L-27R Trash 0.035274 – – – Other

08/25/11 14L-32R Concrete chunk 0.987672 2 1.375 5.75 Concrete

08/25/11 14L-32R Concrete chunk 0.952398 2 1.25 0.75 Concrete

08/25/11 14L-32R Concrete chunk 0.952398 1.625 1.125 0.75 Concrete

08/25/11 14L-32R Concrete chunk 1.728426 1.875 1.625 0.875 Concrete

08/25/11 14L-32R Asphalt chunk 0.846576 2 1.5 0.375 Asphalt

08/25/11 14L-32R Expansion joint 

material

0.952398 6.875 0.875 0.375 Rubber

08/25/11 14L-32R Wire bristle 0.035274 4.75 0.125 0.125 Metal

08/25/11 14L-32R Washer 0.070548 0.75 0.75 0.125 Metal

08/25/11 14L-32R Broken washer 0.035274 0.25 0.25 0.125 Metal

08/25/11 14L-32R Green metal tag 0.070548 1.25 0.75 0.125 Metal

08/25/11 14L-32R Nut 0.141096 0.5 0.5 0.25 Metal

08/25/11 14L-32R Metal rotator 0.246918 0.875 0.375 0.375 Metal

08/25/11 14L-32R Trash 0.141096 – – – Other

09/01/11 9R-27L Trash 0.493836 – – – Other

09/01/11 9R-27L Broken glass 0.634932 – – – Glass

09/01/11 9R-27L Paint chips 12.557544 – – – Paint

09/01/11 9R-27L Concrete chunk 1.481508 1.5 1.375 1.125 Concrete

09/01/11 9R-27L Bent black pin 0.070548 3.375 0.25 0.125 Metal

09/01/11 9R-27L Black metal side 1.481508 6.875 1.5 0.125 Metal

09/01/11 9R-27L Broken chain link 1.340412 2.625 1.75 0.25 Metal

09/01/11 9R-27L Broken metal grating 0.282192 6 1 0.5 Metal

09/01/11 9R-27L Broken nail 0.070548 1.625 0.125 0.125 Metal

09/01/11 9R-27L Broken rotator 0.070548 0.625 0.25 0.125 Metal

09/01/11 9R-27L Broken zipper 0.317466 2.25 0.75 0.25 Metal

09/01/11 9R-27L Broken zipper head 0.070548 0.5 0.375 0.25 Metal

09/01/11 9R-27L Chain link 1.305138 1.875 1.125 0.25 Metal

09/01/11 9R-27L Concave washer 0.035274 0.375 0.375 0.125 Metal

09/01/11 9R-27L Concrete chunk 1.481508 1.5 1.375 1.125 Concrete

09/01/11 9R-27L Concrete chunk 1.446234 1.5 1.25 1 Concrete

09/01/11 9R-27L Concrete chunk 1.516782 1.5 1.25 1 Concrete

09/01/11 9R-27L Concrete chunk 1.199316 1.625 1.375 0.75 Concrete

09/01/11 9R-27L Concrete chunk 1.798974 1.5 1.5 1.25 Concrete

09/01/11 9R-27L Curled metal pin 0.070548 1.875 0.5 0.125 Metal

09/01/11 9R-27L Curled metal wire 0.070548 3.25 1 0.125 Metal

09/01/11 9R-27L Expansion joint 

material

0.88185 4 1.125 0.5 Rubber

09/01/11 9R-27L Expansion joint 

material

0.493836 3 1.5 0.25 Rubber

09/01/11 9R-27L Expansion joint 

material

0.52911 2.75 1.375 0.75 Rubber

09/01/11 9R-27L Expansion joint 

material

0.423288 4 0.5 0.5 Rubber
B-4

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

09/01/11 9R-27L Flat rivet 0.035274 0.5 0.5 0.375 Metal

09/01/11 9R-27L Hair pin 0.035274 2 0.125 0.125 Metal

09/01/11 9R-27L Hair pin 0.035274 2 0.125 0.125 Metal

09/01/11 9R-27L Lady bug hair clip 0.035274 1 0.375 0.25 Metal

09/01/11 9R-27L Lock washer 0.070548 0.5 0.5 0.125 Metal

09/01/11 9R-27L Nail 0.035274 1.75 0.25 0.125 Metal

09/01/11 9R-27L Safety pin 0.035274 2 0.25 0.125 Metal

09/01/11 9R-27L Luggage key 0.035274 1 0.625 0.125 Metal

09/01/11 9R-27L Luggage key 0.035274 1 0.625 0.125 Metal

09/01/11 9R-27L Luggage wheel 3.668496 2.5 2.5 1.75 Other

09/01/11 9R-27L Notched washer 0.070548 0.75 0.75 0.125 Metal

09/01/11 9R-27L Nut 0.141096 0.375 0.375 0.25 Metal

09/01/11 9R-27L Nut 0.070548 0.375 0.375 0.125 Metal

09/01/11 9R-27L Ribbed nail 0.17637 3 0.25 0.125 Metal

09/01/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

09/01/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

09/01/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

09/01/11 9R-27L Rivet 0.070548 0.625 0.375 0.125 Metal

09/01/11 9R-27L Rubber strip 0.846576 4 0.75 0.5 Rubber

09/01/11 9R-27L Nail 0.035274 1.5 0.125 0.125 Metal

09/01/11 9R-27L Rusted crimped wire 0.070548 2.5 1.25 0.125 Metal

09/01/11 9R-27L Rusted curled wire 0.105822 1.25 0.5 0.125 Metal

09/01/11 9R-27L Rusted lock washer 0.070548 0.75 0.625 0.125 Metal

09/01/11 9R-27L Rusted rivet 0.105822 0.5 0.375 0.125 Metal

09/01/11 9R-27L Screw 0.070548 0.5 0.375 0.125 Metal

09/01/11 9R-27L Screw 0.070548 0.5 0.375 0.125 Metal

09/01/11 9R-27L Screw 0.070548 0.625 0.375 0.125 Metal

09/01/11 9R-27L Bb 0.070548 0.25 0.25 0.25 Metal

09/01/11 9R-27L Small corrugated metal 

strip

0.035274 1.875 0.125 0.125 Metal

09/01/11 9R-27L Small cotter key 0.035274 0.875 0.375 0.125 Metal

09/01/11 9R-27L Small cotter pin 0.035274 1.125 0.25 0.125 Metal

09/01/11 9R-27L Small paper clip 0.035274 1.25 0.375 0.125 Metal

09/01/11 9R-27L Small paper clip 0.035274 1.25 0.375 0.125 Metal

09/01/11 9R-27L Small paper clip 0.035274 1.25 0.375 0.125 Metal

09/01/11 9R-27L Small paper clip 0.035274 1.25 0.375 0.125 Metal

09/01/11 9R-27L Small safety pin 0.035274 1.125 0.25 0.125 Metal

09/01/11 9R-27L Small safety pin 0.035274 1.125 0.25 0.125 Metal

09/01/11 9R-27L Small screw bracket 0.035274 0.375 0.25 0.25 Metal

09/01/11 9R-27L Small thin screw 0.035274 0.5 0.125 0.125 Metal

09/01/11 9R-27L Small tri width rod 0.035274 2.875 0.125 0.125 Metal

09/01/11 9R-27L Smashed luggage 

wheel part

0.141096 1.125 0.875 0.25 Metal

09/01/11 9R-27L Thick rusted wire 0.141096 4.125 0.125 0.125 Metal

09/01/11 9R-27L Tiny rivet 0.035274 0.25 0.25 0.125 Metal

09/01/11 9R-27L Tiny screw 0.035274 0.375 0.25 0.125 Metal
B-5

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

09/01/11 9R-27L Tiny washer 0.035274 0.375 0.375 0.125 Metal

09/01/11 9R-27L U-shaped wire 0.070548 0.75 0.5 0.125 Metal

09/01/11 9R-27L Washer 0.105822 0.75 0.75 0.125 Metal

09/01/11 9R-27L Washer 0.211644 1 1 0.125 Metal

09/01/11 9R-27L Wide convex pin 0.035274 1.625 0.25 0.125 Metal

09/01/11 9R-27L Wire 0.035274 5 1.75 0.125 Metal

09/01/11 9R-27L Zipper tag 0.17637 1.5 0.5 0.125 Metal

09/01/11 9R-27L Zipper with Cloth Tag 0.246918 5 0.625 0.25 Other

09/01/11 9R-27L Metal bristles 0.917124 – – – Metal

09/07/11 14R-32L Trash 0.035274 – – – Other

09/07/11 14R-32L Paint chips 0 – – – Paint

09/07/11 14R-32L Metal bristles 0.035274 – – – Metal

09/07/11 14R-32L Concrete chunk 1.622604 2 1.5 0.25 Concrete

09/07/11 14R-32L Asphalt chunk 0.846576 1.625 1.5 1 Asphalt

09/07/11 14R-32L Rodent 0.141096 4.25 2 0.5 Animal

09/07/11 14R-32L Plastic tab 0.17637 3.375 0.725 0.25 Plastic

09/07/11 14R-32L Metal tag 0.282192 3.75 0.25 0.125 Metal

09/07/11 14R-32L Metal bracket 0.17637 1.5 0.5 0.125 Metal

09/07/11 14R-32L Metal fragment 0.423288 0.625 0.5 0.5 Metal

09/07/11 14R-32L Metal fragment 0.035274 0.5 0.375 0.25 Metal

09/07/11 14R-32L Screw 0.105822 1.125 0.25 0.25 Metal

09/07/11 14R-32L Washer 0.035274 0.375 0.375 0.125 Metal

09/07/11 14R-32L Washer 0.035274 0.375 0.375 0.125 Metal

09/07/11 14R-32L Metal button 0.035274 0.375 0.375 0.125 Metal

09/07/11 14R-32L Coiled wire 0.035274 0.375 0.375 0.125 Metal

09/22/11 4R-22L Trash 0.035274 – – – Other

09/22/11 4R-22L Metal bristles 0.070548 – – – Metal

09/22/11 4R-22L Luggage keys 0.105822 1 0.625 0.125 Metal

09/22/11 4R-22L Luggage key 0.070548 1.125 0.5 0.125 Metal

09/22/11 4R-22L Safety pin 0.035274 2 0.25 0.125 Metal

09/22/11 4R-22L Twisted wire 0.035274 2.75 0.25 0.125 Metal

09/22/11 4R-22L Thin u shaped wire 0.035274 1 0.25 0.125 Metal

09/22/11 4R-22L Luggage lock shackle 0.070548 1.125 0.5 0.125 Metal

09/22/11 4R-22L Quarter 0.282192 0.875 0.875 0.125 Metal

09/22/11 4R-22L Screw 0.070548 0.875 0.875 0.125 Metal

09/22/11 4R-22L Screw 0.070548 0.625 0.375 0.125 Metal

09/22/11 4R-22L Screw 0.070548 0.625 0.375 0.125 Metal

09/22/11 4R-22L Silver luggage lock 

roller

0.070548 0.5 0.5 0.125 Metal

09/22/11 4R-22L Gold luggage lock 

roller

0.070548 0.5 0.5 0.125 Metal

09/22/11 4R-22L Nut 0.17637 0.5 0.5 0.5 Metal

09/22/11 4R-22L Washer 0.105822 0.625 0.625 0.125 Metal

09/29/11 14L-32R Broken glass 0.493836 – – – Glass

09/29/11 14L-32R Paint chips 14.532888 – – – Paint

09/29/11 14L-32R Concrete chunk 1.728426 2.125 1.75 0.75 Concrete
B-6

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

09/29/11 14L-32R Concrete chunk 1.834248 2 1.25 1.125 Concrete

09/29/11 14L-32R Concrete chunk 1.164042 1.875 1.25 0.75 Concrete

09/29/11 14L-32R Concrete chunk 1.093494 1.75 1.25 1 Concrete

09/29/11 14L-32R Tar strip 0.458562 3.5 1 0.25 Tar

09/29/11 14L-32R Tar strip 0.846576 2.125 1 0.625 Tar

09/29/11 14L-32R Black metal pin 0.070548 2.75 0.25 0.125 Metal

09/29/11 14L-32R Curled metal pin 0.070548 2.125 0.25 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.141096 1.5 0.375 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.599658 1.75 0.625 0.25 Metal

09/29/11 14L-32R Metal luggage tag 0.070548 1.375 0.375 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.070548 1.375 0.375 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.070548 1 0.375 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.246918 1.25 0.5 0.25 Metal

09/29/11 14L-32R Metal luggage tag 0.17637 1.25 0.5 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.070548 1.125 0.25 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.246918 1.75 0.625 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.141096 1.25 0.625 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.105822 1.5 0.375 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.246918 1.5 0.5 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.317466 1.5 0.625 0.25 Metal

09/29/11 14L-32R Metal luggage tag 0.17637 1.5 0.625 0.25 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.070548 0.5 0.375 0.125 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.070548 0.625 0.5 0.125 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.035274 0.5 0.375 0.125 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.070548 0.5 0.375 0.125 Metal

09/29/11 14L-32R Broken metal luggage 

tag

0.070548 0.75 0.5 0.125 Metal

09/29/11 14L-32R Metal luggage tag 0.17637 1 0.625 0.125 Metal

09/29/11 14L-32R Broken zipper housing 0.070548 0.75 0.5 0.25 Metal

09/29/11 14L-32R Broken zipper housing 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Plastic zipper tag 0.035274 0.625 0.375 0.125 Plastic

09/29/11 14L-32R Luggage lock shackle 0.070548 1.125 0.625 0.125 Metal

09/29/11 14L-32R Small plastic wheel 0.035274 0.5 0.5 0.25 Plastic

09/29/11 14L-32R Broken luggage lock 0.17637 0.875 0.75 0.375 Metal

09/29/11 14L-32R Metal luggage tag 0.17637 1 0.5 0.125 Metal

09/29/11 14L-32R Metal locket 0.070548 0.625 0.625 0.125 Metal

09/29/11 14L-32R Metal luggage key 0.035274 0.875 0.5 0.125 Metal

09/29/11 14L-32R Small metal disk 0.035274 0.625 0.625 0.125 Metal

09/29/11 14L-32R Small grey disk 0.035274 0.5 0.5 0.125 Metal

09/29/11 14L-32R Bb 0.070548 0.25 0.25 0.25 Metal
B-7

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

09/29/11 14L-32R Bb 0.070548 0.25 0.25 0.25 Metal

09/29/11 14L-32R Bb 0.035274 0.25 0.25 0.25 Metal

09/29/11 14L-32R Bb 0.035274 0.25 0.25 0.25 Metal

09/29/11 14L-32R Bb 0.035274 0.125 0.125 0.125 Metal

09/29/11 14L-32R Plastic wire cover 0.070548 1 0.5 0.375 Plastic

09/29/11 14L-32R Plastic wire connector 0.070548 1.5 0.5 0.25 Plastic

09/29/11 14L-32R Metallic plastic shard 0.035274 0.75 0.625 0.125 Other

09/29/11 14L-32R Broken red reflector 0.035274 1 0.625 0.25 Glass

09/29/11 14L-32R Orange strap 0.035274 0.25 0.5 0.125 Cloth

09/29/11 14L-32R Plastic button 0.035274 0.625 0.625 0.125 Plastic

09/29/11 14L-32R Penny 0.070548 0.75 0.75 0.125 Metal

09/29/11 14L-32R Dime 0.070548 0.625 0.625 0.125 Metal

09/29/11 14L-32R Worn bearing wheel 0.952398 2 2 0.375 Metal

09/29/11 14L-32R Broken bearing wheel 0.458562 2.125 2 0.25 Metal

09/29/11 14L-32R Large rusted staple 0.246918 4.25 1.75 0.125 Metal

09/29/11 14L-32R Broken half inch socket 0.811302 1.25 0.75 0.75 Metal

09/29/11 14L-32R Metal pin hold 0.282192 1.375 0.375 0.375 Metal

09/29/11 14L-32R Rusted metal shard 0.52911 1.25 0.875 0.25 Metal

09/29/11 14L-32R Broken metal shard 0.388014 1.25 0.5 0.25 Metal

09/29/11 14L-32R Broken metal shard 0.105822 1.125 0.25 0.125 Metal

09/29/11 14L-32R Broken metal shard 0.141096 0.875 0.25 0.25 Metal

09/29/11 14L-32R Rusted metal wire 0.035274 1 0.5 0.125 Metal

09/29/11 14L-32R Broken luggage tag 0.035274 0.5 0.375 0.125 Metal

09/29/11 14L-32R Broken luggage tag 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Broken luggage tag 0.035274 0.875 0.375 0.125 Metal

09/29/11 14L-32R Broken luggage key 0.035274 0.625 0.375 0.125 Metal

09/29/11 14L-32R Metal wire connector 0.035274 0.625 0.25 0.125 Metal

09/29/11 14L-32R Small roller bearing 

casing

0.035274 1.125 0.625 0.125 Metal

09/29/11 14L-32R Broken wire jack 0.035274 2 0.375 0.125 Metal

09/29/11 14L-32R Small metal chain 0.105822 2.375 0.25 0.125 Metal

09/29/11 14L-32R Tiny metal chain 0.035274 0.75 0.125 0.125 Metal

09/29/11 14L-32R Small metal fragment 0.035274 0.5 0.25 0.125 Metal

09/29/11 14L-32R Small metal wheel 0.035274 0.5 0.5 0.125 Metal

09/29/11 14L-32R Small metal wheel 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Small rubber gasket 0.035274 0.375 0.375 0.125 Rubber

09/29/11 14L-32R Small rubber gasket 0.035274 0.25 0.25 0.125 Rubber

09/29/11 14L-32R Washer 0.17637 0.875 0.875 0.125 Metal

09/29/11 14L-32R Rusted washer 0.141096 0.75 0.75 0.125 Metal

09/29/11 14L-32R Bent washer 0.070548 0.875 0.5 0.125 Metal

09/29/11 14L-32R Small washer 0.035274 0.5 0.5 0.125 Metal

09/29/11 14L-32R Small washer 0.035274 0.5 0.5 0.125 Metal

09/29/11 14L-32R Small thin washer 0.035274 0.5 0.5 0.125 Metal

09/29/11 14L-32R Small convex washer 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Tiny washer 0.035274 0.25 0.25 0.125 Metal

09/29/11 14L-32R Tiny washer 0.035274 0.375 0.375 0.375 Metal
B-8

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

09/29/11 14L-32R Nut 0.246918 0.5 0.5 0.25 Metal

09/29/11 14L-32R Nut 0.141096 0.375 0.375 0.25 Metal

09/29/11 14L-32R Nut 0.070548 0.375 0.375 0.125 Metal

09/29/11 14L-32R Nut 0.070548 0.375 0.375 0.125 Metal

09/29/11 14L-32R Nut 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Nut 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Nut 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Nut 0.035274 0.25 0.25 0.125 Metal

09/29/11 14L-32R Nut 0.035274 0.25 0.25 0.125 Metal

09/29/11 14L-32R Broken rotator 0.070548 0.375 0.25 0.25 Metal

09/29/11 14L-32R Broken rotator 0.070548 0.375 0.25 0.25 Metal

09/29/11 14L-32R Broken rotator 0.035274 0.25 0.25 0.25 Metal

09/29/11 14L-32R Screw 0.141096 1.25 0.375 0.375 Metal

09/29/11 14L-32R Bent screw 0.070548 0.75 0.375 0.25 Metal

09/29/11 14L-32R Tiny bolt 0.035274 0.375 0.25 0.25 Metal

09/29/11 14L-32R Broken rivet 0.035274 0.375 0.375 0.25 Metal

09/29/11 14L-32R Broken rivet 0.035274 0.375 0.375 0.375 Metal

09/29/11 14L-32R Broken rivet 0.035274 0.375 0.25 0.25 Metal

09/29/11 14L-32R Rivet cap 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Metal fragment 0.070548 0.75 0.375 0.125 Metal

09/29/11 14L-32R Metal fragment 0.070548 1.125 0.25 0.125 Metal

09/29/11 14L-32R Metal fragment 0.035274 0.625 0.375 0.125 Metal

09/29/11 14L-32R Metal fragment 0.035274 0.375 0.375 0.125 Metal

09/29/11 14L-32R Metal fragment 0.035274 0.375 0.125 0.125 Metal

09/29/11 14R-32L Small convex washer 0.035274 0.375 0.375 0.125 Metal

10/05/11 9R-27L Paint chips 4.444524 – – – Paint

10/05/11 9R-27L Trash 0.317466 – – – Other

10/05/11 9R-27L Concrete chunk 1.622604 1.625 1.5 0.875 Concrete

10/05/11 9R-27L Thin metal strips 0.211644 – – – Metal

10/05/11 9R-27L Asphalt chunk 0.917124 1.5 1 0.875 Asphalt

10/05/11 9R-27L Tar strip 0.564384 3.5 0.875 0.25 Tar

10/05/11 9R-27L Rubber piece 0.035274 1.75 0.375 0.25 Rubber

10/05/11 9R-27L Wood piece 0.458562 6.25 0.5 0.5 Wood

10/05/11 9R-27L Metal fragment 0.035274 0.375 0.25 0.25 Metal

10/05/11 9R-27L Small metal cylinder 0.070548 0.375 0.25 0.25 Metal

10/05/11 9R-27L 3/8′′ diameter plastic 

wire covering

0.423288 – – – Plastic

10/05/11 9R-27L BB 0.070548 0.25 0.25 0.25 Metal

10/05/11 9R-27L BB 0.035274 0.25 0.25 0.25 Metal

10/05/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

10/05/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

10/05/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

10/05/11 9R-27L Ribbed washer 0.035274 0.625 0.625 0.125 Metal

10/05/11 9R-27L Bolt assembly 0.599658 0.875 0.5 0.5 Metal

10/05/11 9R-27L Bolt 1.375686 2.75 0.5 0.5 Metal

10/05/11 9R-27L Screw 0.17637 1.375 0.375 0.375 Metal
B-9

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

10/05/11 9R-27L Screw 0.105822 1 0.375 0.375 Metal

10/05/11 9R-27L Screw 0.141096 0.625 0.5 0.5 Metal

10/05/11 9R-27L Screw 0.105822 0.75 0.375 0.375 Metal

10/05/11 9R-27L Screw 0.070548 0.625 0.375 0.375 Metal

10/05/11 9R-27L Screw 0.070548 0.625 0.25 0.25 Metal

10/05/11 9R-27L Screw 0.070548 0.5 0.375 0.375 Metal

10/05/11 9R-27L Screw 0.070548 0.5 0.25 0.25 Metal

10/12/11 9L-27R Paint chips 1.269864 – – – Paint

10/12/11 9L-27R Broken glass 0.317466 – – – Glass

10/12/11 9L-27R Trash 0.035274 – – – Other

10/12/11 9L-27R Metal bristles 0.388014 – – – Metal

10/12/11 9L-27R Corrugated metal strips 0.035274 – – – Metal

10/12/11 9L-27R Knife fragment 0.17637 1.125 0.875 0.125 Metal

10/12/11 9L-27R Concrete chunk 4.550346 2 1.875 1.25 Concrete

10/12/11 9L-27R Concrete chunk 3.562674 2 1.625 1.375 Concrete

10/12/11 9L-27R Concrete chunk 3.315756 2 1.75 1.375 Concrete

10/12/11 9L-27R Concrete chunk 1.199316 1.625 1.25 0.75 Concrete

10/12/11 9L-27R Concrete chunk 1.022946 1.5 1.25 0.875 Concrete

10/12/11 9L-27R Flat metal fragment 0.458562 3 1.625 0.125 Metal

10/12/11 9L-27R Small pin 0.035274 1.25 0.25 0.125 Metal

10/12/11 9L-27R Ribbed washer 0.035274 0.625 0.625 0.125 Metal

10/12/11 9L-27R Washer 0.035274 0.375 0.375 0.125 Metal

10/12/11 9L-27R Nut 0.035274 0.375 0.375 0.125 Metal

10/12/11 9L-27R Lock washer 0.035274 0.25 0.25 0.125 Metal

10/12/11 9L-27R Screw 0.070548 0.625 0.25 0.25 Metal

10/12/11 9L-27R BB 0.035274 0.125 0.125 0.125 Metal

10/12/11 9L-27R BB 0.035274 0.125 0.125 0.125 Metal

10/12/11 9L-27R Broken wire connector 0.070548 1.5 0.25 0.25 Metal

11/01/11 10-28 Trash 0.070548 – – – Other

11/01/11 10-28 Metal bristles 0.035274 – – – Metal

11/01/11 10-28 Concrete chunk 3.456852 2.5 1.75 0.875 Concrete

11/01/11 10-28 Asphalt chunk 1.657878 1 1 0.875 Asphalt

11/01/11 10-28 Metal wire 0.035274 9 0.125 0.125 Metal

11/01/11 10-28 Metal zipper tag 0.17637 1.25 0.5 0.25 Metal

11/01/11 10-28 Metal zipper tag 0.070548 1.25 0.5 0.125 Metal

11/01/11 10-28 Metal zipper tag 0.070548 0.625 0.5 0.25 Metal

11/01/11 10-28 Broken rivet head 0.035274 0.25 0.25 0.25 Metal

11/01/11 10-28 Smashed metal piece 0.035274 0.375 0.375 0.125 Metal

11/01/11 10-28 Metal tag 0.141096 1.25 0.875 0.125 Metal

11/01/11 10-28 Metal disk 0.211644 0.75 0.75 0.125 Metal

11/01/11 10-28 Yellow metal valve cap 0.141096 1 1 0.5 Metal

11/01/11 10-28 Metal valve cap 0.141096 1 0.375 0.375 Metal

11/01/11 10-28 Small screw 0.070548 0.625 0.375 0.375 Metal

11/01/11 10-28 Cap screw 0.105822 0.875 0.375 0.375 Metal

11/01/11 10-28 Broken rotator part 0.070548 0.625 0.25 0.25 Metal

11/01/11 10-28 Washer 0.035274 1 1 0.125 Metal

11/01/11 10-28 Washer 0.035274 0.625 0.625 0.125 Metal
B-10

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

11/01/11 10-28 Washer 0.070548 0.625 0.625 0.125 Metal

11/15/11 14R-32L Paint chips 0.493836 – – – Paint

11/15/11 14R-32L Asphalt chunk 1.022946 1.5 1 0.75 Asphalt

11/15/11 14R-32L Tar strip 0.776028 5.5 0.625 0.25 Tar

11/15/11 14R-32L Nail shaft 0.070548 1.625 0.125 0.125 Metal

11/15/11 14R-32L Screw 0.141096 0.75 0.375 0.375 Metal

11/15/11 14R-32L Screw 0.070548 0.5 0.25 0.25 Metal

11/15/11 14R-32L Washer 0.105822 0.625 0.625 0.125 Metal

12/01/11 14L-32R Paint chips 3.280482 – – – Paint

12/01/11 14L-32R Trash 0.035274 – – – Other

12/01/11 14L-32R Plastic fragment 0.070548 1.875 0.675 0.125 Plastic

12/01/11 14L-32R Tar strip 0.105822 2 0.375 0.25 Tar

12/01/11 14L-32R Buckle 0.070548 0.875 0.625 0.125 Metal

12/01/11 14L-32R Rubber tag end 0.105822 0.75 0.375 0.25 Rubber

12/01/11 14L-32R Bolt 0.52911 1.25 0.5 0.5 Metal

12/01/11 14L-32R Washer 0.070548 0.625 0.625 0.125 Metal

12/01/11 14L-32R Washer 0.070548 0.625 0.625 0.125 Metal

12/01/11 14L-32R Metal spring 0.035274 0.5 0.25 0.125 Metal

12/01/11 14L-32R Metal cap 0.035274 0.375 0.375 0.125 Metal

12/01/11 14L-32R Metal fragment 0.035274 0.75 0.25 0.125 Metal

12/01/11 14L-32R Rubber cap 0.035274 0.5 0.25 0.25 Rubber

12/07/11 4L-22R Trash 0.282192 – – – Other

12/07/11 4L-22R Paint chips 2.11644 – – – Paint

12/07/11 4L-22R Metal banding 1.693152 27 5.5 0.25 Metal

12/07/11 4L-22R Concrete chunk 12.486996 4.5 2.5 1.75 Concrete

12/07/11 4L-22R Concrete chunk 2.257536 2.75 1.875 0.875 Concrete

12/07/11 4L-22R Asphalt chunk 1.834248 2.125 1.875 1 Asphalt

12/07/11 4L-22R Asphalt chunk 1.05822 1.25 1.125 1 Asphalt

12/07/11 4L-22R Tire shred 0.070548 4.75 0.5 0.125 Rubber

12/07/11 4L-22R Plastic fragment 0.070548 3.5 0.75 0.125 Plastic

12/07/11 4L-22R Plastic fragment 0.070548 2.25 0.25 0.25 Plastic

12/07/11 4L-22R Plastic fragment 0.035274 1.625 0.5 0.125 Plastic

12/07/11 4L-22R Plastic fragment 0.070548 1.125 0.625 0.375 Plastic

12/07/11 4L-22R Rubber cap 0.070548 1.125 0.75 0.75 Rubber

12/07/11 4L-22R Rubber coil 0.035274 0.5 0.25 0.25 Rubber

12/07/11 4L-22R Rubber tag end 0.035274 0.375 0.125 0.125 Rubber

12/07/11 4L-22R Metal fragment 0.105822 0.875 0.75 0.25 Metal

12/07/11 4L-22R Bolt 0.070548 0.5 0.5 0.5 Metal

12/07/11 4L-22R Lock washer 0.105822 0.625 0.625 0.125 Metal

12/07/11 4L-22R Washer 0.035274 0.625 0.625 0.125 Metal

12/07/11 4L-22R Metal rotator 0.070548 0.5 0.25 0.25 Metal

12/07/11 4L-22R Small screw bracket 0.070548 0.625 0.375 0.25 Metal

12/07/11 4L-22R Bb 0.141096 0.375 0.375 0.375 Metal

12/07/11 4L-22R Luggage tag 0.141096 1.5 0.375 0.25 Metal

12/07/11 4L-22R Screw 0.141096 1 0.25 0.25 Metal

12/07/11 4L-22R Screw 0.070548 0.875 0.375 0.375 Metal
B-11

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

12/07/11 4L-22R Screw 0.070548 0.625 0.375 0.375 Metal

12/07/11 4L-22R Screw 0.035274 0.375 0.25 0.25 Metal

12/13/11 9R-27L Trash 0.317466 – – – Other

12/13/11 9R-27L Paint chips 0.423288 – – – Paint

12/13/11 9R-27L Metal bristles 0.317466 – – – Metal

12/13/11 9R-27L Broken glass 0.070548 – – – Glass

12/13/11 9R-27L Concrete chunk 1.375686 1.625 1.25 0.625 Concrete

12/13/11 9R-27L Plastic fragment 0.070548 2.625 0.375 0.125 Plastic

12/13/11 9R-27L Foam sealant 0.035274 7.5 0.625 0.625 Rubber

12/13/11 9R-27L Metal fragment 0.035274 3.25 0.25 0.125 Metal

12/13/11 9R-27L Metal fragment 0.035274 0.625 0.375 0.125 Metal

12/13/11 9R-27L Dime 0.070548 0.75 0.75 0.125 Metal

12/13/11 9R-27L Paper clip 0.035274 1 0.375 0.125 Metal

12/13/11 9R-27L Threaded socket 0.035274 0.375 0.375 0.25 Metal

12/13/11 9R-27L Lock washer 0.035274 0.5 0.5 0.125 Metal

12/13/11 9R-27L Bb 0.141096 0.375 0.375 0.375 Metal

12/13/11 9R-27L Bb 0.035274 0.25 0.25 0.25 Metal

12/13/11 9R-27L Bb 0.035274 0.25 0.25 0.25 Metal

12/13/11 9R-27L Bb 0.035274 0.25 0.25 0.25 Metal

12/13/11 9R-27L Bb 0.035274 0.25 0.25 0.25 Metal

12/13/11 9R-27L Bb 0.035274 0.25 0.25 0.25 Metal

12/13/11 9R-27L Screw 0.141096 1.125 0.375 0.375 Metal

12/13/11 9R-27L Screw 0.070548 0.875 0.375 0.375 Metal

12/13/11 9R-27L Screw 0.070548 0.625 0.375 0.375 Metal

12/13/11 9R-27L Screw 0.070548 0.625 0.375 0.375 Metal

12/22/11 4R-22L Paint chips 4.373976 – – – Paint

12/22/11 4R-22L Trash 0.211644 – – – Other

12/22/11 4R-22L Metal bristles 0.35274 – – – Metal

12/22/11 4R-22L Asphalt chunk 3.950688 2.875 1.75 1.25 Asphalt

12/22/11 4R-22L Asphalt chunk 3.950688 2.5 1.75 1.375 Asphalt

12/22/11 4R-22L Asphalt chunk 3.209934 2.5 1.75 1.25 Asphalt

12/22/11 4R-22L Asphalt chunk 2.857194 2.375 1.5 1.75 Asphalt

12/22/11 4R-22L Asphalt chunk 2.11644 2 1.5 1.5 Asphalt

12/22/11 4R-22L Asphalt chunk 2.151714 2 1.375 1.375 Asphalt

12/22/11 4R-22L Asphalt chunk 1.23459 2.25 1.375 1.125 Asphalt

12/22/11 4R-22L Asphalt chunk 1.128768 1.625 1.375 1 Asphalt

12/22/11 4R-22L Asphalt chunk 1.446234 2 1.75 1.25 Asphalt

12/22/11 4R-22L Asphalt chunk 1.269864 2 1.25 1.125 Asphalt

12/22/11 4R-22L Asphalt chunk 1.022946 1.625 1.25 1 Asphalt

12/22/11 4R-22L Asphalt chunk 0.670206 1.375 1.125 1 Asphalt

12/22/11 4R-22L Asphalt chunk 0.776028 1.375 1.125 1 Asphalt

12/22/11 4R-22L Asphalt chunk 0.776028 1.375 1.125 1 Asphalt

12/22/11 4R-22L Asphalt chunk 0.776028 1.375 1.125 1 Asphalt

12/22/11 4R-22L Asphalt chunk 0.493836 1.875 1 0.75 Asphalt

12/22/11 4R-22L Asphalt chunk 0.423288 1.125 0.875 0.75 Asphalt

12/22/11 4R-22L Asphalt chunk 0.634932 1.5 0.875 0.25 Asphalt
B-12

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

12/22/11 4R-22L Asphalt chunk 0.388014 1.5 1 0.625 Asphalt

12/22/11 4R-22L Rock 1.05822 1.875 1.375 0.75 Other

12/22/11 4R-22L Plastic buckle 0.282192 2.375 2 0.5 Plastic

12/22/11 4R-22L Rubber piece 0.105822 4 0.25 0.25 Rubber

12/22/11 4R-22L Cloth strap 0.070548 6.25 0.375 0.125 Cloth

12/22/11 4R-22L Copper wire piece 0.105822 1.25 0.25 0.25 Metal

12/22/11 4R-22L Zipper housing 0.035274 0.5 0.375 0.125 Metal

12/22/11 4R-22L Zipper housing 0.070548 0.5 0.5 0.125 Metal

12/22/11 4R-22L Safety pin 0.035274 1 0.75 0.125 Metal

01/04/12 10-28 Paint chips 6.70206 – – – Paint

01/04/12 10-28 Trash 0.458562 – – – Other

01/04/12 10-28 Metal bristles 0.070548 – – – Metal

01/04/12 10-28 Asphalt chunk 5.044182 3.25 2 2 Asphalt

01/04/12 10-28 Asphalt chunk 1.657878 2.75 1.5 1.125 Asphalt

01/04/12 10-28 Asphalt chunk 0.987672 2.25 1.25 1 Asphalt

01/04/12 10-28 Concrete chunk 1.269864 2.25 1.25 1 Concrete

01/04/12 10-28 Concrete chunk 0.776028 1.625 1.5 0.5 Concrete

01/04/12 10-28 Tar chunk 1.022946 3 1.25 1.125 Tar

01/04/12 10-28 Tar chunk 0.282192 2.75 0.75 0.375 Tar

01/04/12 10-28 Tar strip 0.634932 3.375 0.5 0.5 Tar

01/04/12 10-28 Cloth strap 1.164042 32 1 0.125 Cloth

01/04/12 10-28 Round rubber fragment 0.317466 2.625 2.125 0.375 Rubber

01/04/12 10-28 Plastic fragment 0.035274 1.75 1.25 0.125 Plastic

01/04/12 10-28 Plastic fragment 0.070548 2.125 0.5 0.25 Plastic

01/04/12 10-28 Plastic fragment 0.070548 1.375 0.625 0.25 Plastic

01/04/12 10-28 Hub cap top 3.492126 2.5 2.5 1.25 Metal

01/04/12 10-28 Metal zipper tag 0.141096 1.625 0.5 0.125 Metal

01/04/12 10-28 Metal zipper tag 0.141096 1.25 0.5 0.125 Metal

01/04/12 10-28 Luggage key 0.035274 0.875 0.5 0.125 Metal

01/04/12 10-28 Bobby pin 0.035274 2 0.125 0.125 Metal

01/04/12 10-28 Metal eyelet 0.035274 0.25 0.25 0.125 Metal

01/04/12 10-28 Pencil eraser 0.035274 0.625 0.375 0.125 Rubber

01/04/12 10-28 Screw 0.105822 1.5 0.25 0.25 Metal

01/04/12 10-28 Screw 0.070548 0.75 0.25 0.25 Metal

01/04/12 10-28 Screw 0.035274 0.625 0.25 0.25 Metal

01/04/12 10-28 Screw 0.070548 0.625 0.25 0.25 Metal

01/04/12 10-28 Screw 0.070548 0.625 0.25 0.25 Metal

01/04/12 10-28 Screw 0.070548 0.625 0.25 0.25 Metal

01/04/12 10-28 Screw 0.070548 0.5 0.25 0.25 Metal

01/04/12 10-28 Elbow joint 0.246918 0.875 0.5 0.375 Metal

01/04/12 10-28 Penny 0.105822 0.75 0.75 0.125 Metal

01/04/12 10-28 Antenna 0.246918 6.25 0.25 0.25 Metal

01/10/12 4L-22R Trash 0.493836 – – – Other

01/10/12 4L-22R Metal bristles 0.317466 – – – Metal

01/10/12 4L-22R Paint chips 1.728426 – – – Paint

01/10/12 4L-22R Tar strip 0.388014 3.75 0.75 0.25 Tar
B-13

Date Runway Item Description

Weight 

(oz)

Length

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

01/10/12 4L-22R Tar strip 0.105822 1.875 0.5 0.25 Tar

01/10/12 4L-22R Tar chunk 0.105822 1.5 1.125 0.25 Tar

01/10/12 4L-22R Rubber piece 0.070548 2.625 0.625 0.625 Rubber

01/10/12 4L-22R Broken luggage lock 0.141096 0.875 0.5 0.125 Metal

01/10/12 4L-22R Bent paperclip 0.035274 2.75 0.5 0.125 Metal

01/10/12 4L-22R Broken safety pin 0.035274 0.75 0.375 0.125 Metal

01/10/12 4L-22R Spring 0.035274 0.75 0.25 0.25 Metal

01/10/12 4L-22R Metal fragment 0.246918 0.75 0.25 0.25 Metal

01/10/12 4L-22R Screw 0.070548 0.625 0.25 0.25 Metal

01/10/12 4L-22R Washer 0.035274 0.625 0.625 0.125 Metal

01/10/12 4L-22R Broken washer 0.035274 0.625 0.375 0.125 Metal

01/18/12 9L-27R Metal bristles 0.564384 – – – Metal

01/24/12 14L-32R Paint chips 3.033564 – – – Paint

01/24/12 14L-32R Trash 0.035274 – – – Other

01/24/12 14L-32R Metal bristles 1.022946 – – – Metal

01/24/12 14L-32R Washer 0.035274 0.625 0.625 0.125 Metal

02/01/12 9R-27L Metal bristles 4.373976 – – – Metal

02/01/12 9R-27L Plastic bristles 0.070548 – – – Plastic

02/01/12 9R-27L Trash 0.070548 – – – Other

02/01/12 9R-27L Paint chips 5.855484 – – – Paint

02/01/12 9R-27L Asphalt chunk 1.022946 1.625 1.125 1 Asphalt

02/01/12 9R-27L Concrete chunk 1.164042 2.625 1 0.875 Concrete

02/01/12 9R-27L Tar chunk 0.423288 2.5 1.875 0.5 Tar

02/01/12 9R-27L Tar strip 0.246918 2.875 0.75 0.325 Tar

02/01/12 9R-27L Yellow Plastic 

Fragment x3

0.141096 – – – Plastic

02/01/12 9R-27L Plastic fragment 0.070548 0.75 0.375 0.25 Plastic

02/01/12 9R-27L Bolt 0.493836 0.625 0.625 0.325 Metal

02/01/12 9R-27L Screw with Washer 0.070548 0.5 0.625 0.625 Metal

02/01/12 9R-27L Screw 0.070548 0.625 0.25 0.25 Metal

02/01/12 9R-27L Screw 0.070548 0.675 0.25 0.25 Metal

02/01/12 9R-27L Screw 0.070548 0.625 0.25 0.25 Metal

02/09/12 14R-32L Metal bristles 0.917124 – – – Metal

02/09/12 14R-32L Plastic bristles 0.141096 – – – Plastic

02/09/12 14R-32L Paint chips 4.479798 – – – Paint

02/09/12 14R-32L Blue plastic strip 0.035274 6.5 0.125 0.125 Plastic

02/09/12 14R-32L Yellow plastic 

fragment

0.035274 1.625 0.5 0.125 Plastic

02/09/12 14R-32L Rubber piece 0.17637 3 1.625 0.125 Rubber

02/09/12 14R-32L Rubber grommet 0.070548 1.375 1.375 0.25 Rubber

02/09/12 14R-32L Spring 0.035274 0.25 0.25 0.125 Metal

02/09/12 14R-32L Metal fragment 0.035274 0.5 0.25 0.125 Metal

02/09/12 14R-32L Screw 0.035274 0.625 0.25 0.25 Metal

02/09/12 14R-32L Metal rotator 0.070548 0.5 0.25 0.25 Metal

02/09/12 14R-32L Phillips head bit 0.17637 1 0.25 0.25 Metal

02/15/12 10-28 Metal bristles 1.05822 – – – Metal
B-14

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

02/15/12 10-28 Paint chips 1.869522 – – – Paint

02/15/12 10-28 Trash 0.070548 – – – Other

02/15/12 10-28 Asphalt chunk 1.693152 2 1.325 1 Asphalt

02/15/12 10-28 Tire fragment 0.17637 2.875 1.625 0.25 Rubber

02/15/12 10-28 Rubber piece 0.35274 2.875 2 0.125 Rubber

02/15/12 10-28 Tire strip 0.17637 1.25 0.325 0.325 Rubber

02/15/12 10-28 Plastic fragment 0.070548 1.25 0.625 0.325 Plastic

02/15/12 10-28 Plastic fragment 0.105822 1.5 0.5 0.5 Plastic

02/15/12 10-28 Plastic fragment 0.035274 1.125 0.5 0.125 Plastic

02/15/12 10-28 Glass fragment 0.105822 0.75 0.625 0.25 Glass

02/15/12 10-28 Rivet 0.070548 0.325 0.325 0.325 Metal

02/15/12 10-28 Broken rivet 0.035274 0.325 0.325 0.125 Metal

02/15/12 10-28 Lock washer 0.105822 0.625 0.625 0.125 Metal

02/15/12 10-28 Screw 0.070548 0.5 0.325 0.325 Metal

02/15/12 10-28 Convex washer 0.035274 0.25 0.25 0.125 Metal

02/15/12 10-28 Broken zipper tag 0.035274 0.325 0.325 0.325 Metal

02/15/12 10-28 Bb 0.070548 0.25 0.25 0.25 Metal

02/23/12 4R-22L Metal bristles 1.622604 – – – Metal

02/23/12 4R-22L Trash 0.035274 – – – Other

02/23/12 4R-22L Concrete chunk 1.728426 2 1.5 0.75 Concrete

02/23/12 4R-22L Concrete chunk 1.164042 2.25 1.625 0.625 Concrete

02/23/12 4R-22L Concrete chunk 1.199316 2 1 0.875 Concrete

02/23/12 4R-22L Plastic fragments 0.141096 – – – Plastic

02/23/12 4R-22L Metal fragments 0.070548 – – – Metal

02/23/12 4R-22L Metal wire 0.035274 1.625 0.5 0.125 Metal

02/23/12 4R-22L Metal lug 2.610276 1.875 0.75 0.75 Metal

02/23/12 4R-22L Luggage lock shank 0.105822 1 0.5 0.125 Metal

02/23/12 4R-22L Wire connector 0.141096 4.625 0.75 0.25 Metal

02/23/12 4R-22L Broken luggage tag 0.035274 0.25 0.25 0.125 Metal

02/23/12 4R-22L Tiny screw 0.035274 0.25 0.25 0.25 Metal

02/28/12 4L-22R Metal bristles 3.17466 – – – Metal

02/28/12 4L-22R Plastic bristles 0 – – – Plastic

02/28/12 4L-22R Paint chips 2.892468 – – – Paint

02/28/12 4L-22R Glass pieces 0.388014 – – – Glass

02/28/12 4L-22R Trash 0.246918 – – – Other

02/28/12 4L-22R Tar chunk 4.127058 6 2.375 1.125 Tar

02/28/12 4L-22R Tar chunk 0.52911 1.25 1.5 0.75 Tar

02/28/12 4L-22R Rubber fragment 0.141096 1.5 1.125 0.25 Rubber

02/28/12 4L-22R Metal fragment 0.211644 1.5 1.25 0.375 Metal

02/28/12 4L-22R Metal fragment 0.035274 0.625 0.25 0.125 Metal

02/28/12 4L-22R Luggage key 0.035274 1 0.625 0.125 Metal

02/28/12 4L-22R Bolt 1.375686 2.25 0.75 0.75 Metal

02/28/12 4L-22R Wire connector 0.070548 2.375 0.375 0.25 Metal

02/28/12 4L-22R Wire 0.035274 1.625 0.125 0.125 Metal

03/07/12 9L-27R Metal bristles 1.093494 – – – Metal

03/07/12 9L-27R Paint chips 4.338702 – – – Paint
B-15

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

03/07/12 9L-27R Rubber shavings 0.917124 – – – Rubber

03/07/12 9L-27R Trash 0 – – – Other

03/07/12 9L-27R Joint material 0.88185 – – – Rubber

03/07/12 9L-27R Rubber pieces 0.17637 – – – Rubber

03/07/12 9L-27R Glass 0.317466 – – – Glass

03/07/12 9L-27R Paper clip 0.035274 3.25 1 0.125 Metal

03/07/12 9L-27R Paper clip 0.035274 2 0.75 0.125 Metal

03/07/12 9L-27R Luggage tag 0.211644 1.5 0.625 0.125 Metal

03/07/12 9L-27R Metal fragment 0.070548 0.625 0.25 0.125 Metal

03/07/12 9L-27R Metal rotator 0.035274 0.375 0.25 0.25 Metal

03/07/12 9L-27R Metal rotator 0.035274 0.25 0.25 0.25 Metal

03/13/12 14L-32R Metal bristles 0.846576 – – – Metal

03/13/12 14L-32R Paint chips 5.502744 – – – Paint

03/13/12 14L-32R Trash 0.035274 – – – Other

03/13/12 14L-32R Tar chunk 1.128768 3.125 2 1.5 Tar

03/13/12 14L-32R Tar chunk 0.211644 2 1 0.75 Tar

03/13/12 14L-32R Asphalt chunk 2.045892 2.125 1.75 1 Asphalt

03/13/12 14L-32R Rubber chunk 0.282192 1.75 0.875 0.75 Rubber

04/05/12 10-28 Metal bristles 0.17637 – – – Metal

04/05/12 10-28 Paint chips 1.269864 – – – Paint

04/05/12 10-28 Asphalt chunk 2.257536 2.375 2 1 Asphalt

04/05/12 10-28 Asphalt chunk 1.199316 1.5 1.25 1 Asphalt

04/05/12 10-28 Asphalt chunk 0.317466 2 1.25 0.5 Asphalt

04/05/12 10-28 Plastic luggage wheel 0.317466 1.875 1.875 0.75 Plastic

04/05/12 10-28 Plastic zip tie 0 0.875 0.75 0.25 Plastic

04/05/12 10-28 Screw 0.070548 0.875 0.25 0.25 Metal

04/05/12 10-28 Nail 0.070548 1.375 0.125 0.125 Metal

04/05/12 10-28 Broken zipper tag 0.070548 0.5 0.375 0.125 Metal

04/05/12 10-28 Bb 0.070548 0.25 0.25 0.25 Metal

04/05/12 10-28 Bb 0.070548 0.25 0.25 0.25 Metal

04/10/12 4R-22L Metal bristles 0.317466 – – – Metal

04/10/12 4R-22L Paint chips 2.963016 – – – Paint

04/10/12 4R-22L Concrete chunk 1.904796 1.625 1.5 1 Concrete

04/10/12 4R-22L Screw 0.070548 0.625 0.125 0.125 Metal

04/10/12 4R-22L Screw 0.070548 0.75 0.25 0.25 Metal

04/10/12 4R-22L Screw 0.070548 0.625 0.25 0.25 Metal

04/10/12 4R-22L Screw 0.070548 0.5 0.25 0.25 Metal

04/19/12 9L-27R Metal bristles 0.035274 – – – Metal

04/19/12 9L-27R Paint chips 7.795554 – – – Paint

04/19/12 9L-27R Trash 0 – – – Other

04/19/12 9L-27R Expansion joint 

material

0.52911 5.25 0.75 0.25 Rubber

04/19/12 9L-27R Expansion joint 

material

0.52911 5 0.625 0.25 Rubber

04/19/12 9L-27R Expansion joint 

material

0.317466 4.875 0.5 0.25 Rubber
B-16

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

04/19/12 9L-27R Cotter pin 0.141096 2 0.625 0.125 Metal

04/19/12 9L-27R Screw 0.035274 0.375 0.375 0.375 Metal

04/24/12 4L-22R Metal bristles 0.070548 – – – Metal

04/24/12 4L-22R Trash 0 – – – Other

04/24/12 4L-22R Asphalt chunk 1.128768 1.75 1.25 0.75 Asphalt

04/24/12 4L-22R Concrete chunk 0.670206 1.5 1 0.625 Concrete

04/24/12 4L-22R Tar piece 0.388014 1.5 1 0.625 Tar

05/03/12 14L-32R Metal bristles 0.282192 – – – Metal

05/03/12 14L-32R Paint chips 0.811302 – – – Paint

05/03/12 14L-32R Trash 0.141096 – – – Other

05/03/12 14L-32R Concrete chunk 2.11644 1.625 1.5 1 Concrete

05/03/12 14L-32R Concrete chunk 2.11644 1.375 1.25 1.25 Concrete

05/03/12 14L-32R Concrete chunk 1.41096 1.875 1.25 1 Concrete

05/03/12 14L-32R Concrete chunk 1.199316 1.5 1.375 1 Concrete

05/03/12 14L-32R Asphalt chunk 0.846576 1.375 1.25 0.75 Asphalt

05/03/12 14L-32R Broken plastic bottle 0.599658 4.25 2.375 0.75 Plastic

05/03/12 14L-32R Plastic strip 0.388014 4.75 0.75 0.25 Plastic

05/03/12 14L-32R Foam sealant 0 2.75 0.75 0.75 Rubber

05/03/12 14L-32R Plastic piece 0 1.125 0.5 0.25 Plastic

05/03/12 14L-32R Rubber gasket 0 0.625 0.625 0.125 Rubber

05/03/12 14L-32R Plastic cog 0 0.625 0.375 0.125 Plastic

05/03/12 14L-32R Screw cap 0.070548 0.5 0.5 0.375 Metal

05/03/12 14L-32R Metal shard 0.17637 0.625 0.375 0.25 Metal

05/03/12 14L-32R Metal shard 0 0.75 0.25 0.125 Metal

05/03/12 14L-32R Bb 0.070548 0.25 0.25 0.25 Metal

05/03/12 14L-32R Screw 0.070548 0.625 0.25 0.25 Metal

05/03/12 14L-32R Crushed valve 0 0.75 0.125 0.125 Metal

05/03/12 14L-32R Washer 0 0.25 0.25 0.125 Metal

05/03/12 14L-32R Screw 0.246918 1.875 0.375 0.375 Metal

05/03/12 14L-32R Twisted wire 0.070548 6 0.5 0.125 Metal

05/10/12 9R-27L Metal bristles 0.035274 – – – Metal

05/10/12 9R-27L Paint chips 3.280482 – – – Paint

05/10/12 9R-27L Concrete chunk 1.128768 1.5 1.25 1.125 Concrete

05/10/12 9R-27L Concrete strip 0.493836 2 0.75 0.375 Concrete

05/10/12 9R-27L Asphalt chunk 1.199316 1.25 1.25 0.375 Asphalt

05/10/12 9R-27L Tar strip 0.17637 3.125 0.625 0.375 Tar

05/10/12 9R-27L Antenna 0.246918 6.25 0.25 0.25 Metal

05/10/12 9R-27L Trash 0 – – – Other

05/10/12 9R-27L Luggage badge 0.423288 2.25 1.625 0.125 Metal

05/10/12 9R-27L Broken luggage tag 0.070548 1.125 0.625 0.125 Metal

05/10/12 9R-27L Broken luggage tag 0.105822 1.125 0.375 0.125 Metal

05/10/12 9R-27L Broken luggage tag 0.070548 0.5 0.375 0.125 Metal

05/10/12 9R-27L Metal wire 0.035274 1.375 0.625 0.125 Metal

05/10/12 9R-27L Metal wire 0.070548 1 0.75 0.125 Metal

05/10/12 9R-27L Screw 0.141096 0.625 0.375 0.375 Metal

05/10/12 9R-27L Screw 0.035274 0.5 0.25 0.25 Metal
B-17

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

05/10/12 9R-27L Screw 0.070548 0.5 0.375 0.375 Metal

05/10/12 9R-27L Screw 0 0.5 0.25 0.25 Metal

05/10/12 9R-27L Roller bearing 0.17637 0.5 0.25 0.25 Metal

05/10/12 9R-27L Broken socket 0 0.25 0.25 0.25 Metal

05/10/12 9R-27L BB 0.070548 0.25 0.25 0.25 Metal

05/10/12 9R-27L BB 0.070548 0.25 0.25 0.25 Metal

05/10/12 9R-27L BB 0.070548 0.25 0.25 0.25 Metal

05/10/12 9R-27L BB 0.070548 0.25 0.25 0.25 Metal

05/10/12 9R-27L BB 0 0.25 0.25 0.25 Metal

05/10/12 9R-27L Washer 0 0.375 0.375 0.125 Metal

05/10/12 9R-27L Washer 0 0.375 0.375 0.125 Metal

05/15/12 10-28 Metal bristles 0.17637 – – – Metal

05/15/12 10-28 Paint chips 2.222262 – – – Paint

05/15/12 10-28 Concrete chunk 2.82192 2.375 1.5 1.375 Concrete

05/15/12 10-28 Tar strip 1.657878 10 1 0.5 Tar

05/15/12 10-28 Tar strip 0.634932 3 1.25 0.5 Tar

05/15/12 10-28 Tar strip 0.52911 3.75 0.875 0.625 Tar

05/15/12 10-28 Tar strip 0.246918 4.25 0.25 0.25 Tar

05/15/12 10-28 Screw 0.070548 0.625 0.375 0.375 Metal

05/15/12 10-28 Crushed socket 0 0.25 0.25 0.25 Metal

05/15/12 10-28 Broken luggage tag 0.105822 1.5 0.375 0.125 Metal

05/15/12 10-28 Key ring 0.141096 1 1 0.125 Metal

05/15/12 10-28 Ribbed washer 0 0.625 0.625 0.125 Metal

05/24/12 14R-32L Rubber Sealant 0.599658 5.375 0.5 0.375 Rubber

05/24/12 14R-32L Rubber sealant 0.35274 1.625 1.25 0.625 Rubber

05/24/12 14R-32L Rubber sealant 0.211644 2.25 0.875 0.375 Rubber

05/24/12 14R-32L Yellow valve cap 0.141096 0.5 0.375 0.375 Metal

05/24/12 14R-32L Paper clip 0.035274 1.875 0.5 0 Metal

06/07/12 9L-27R Concrete chunk 0.35274 1.5 1.25 0.188 Concrete

06/07/12 9L-27R Concrete chunk 0.740754 1.75 1.25 0.5 Concrete

06/07/12 9L-27R Concrete chunk 0.52911 1.25 1.125 0.5 Concrete

06/07/12 9L-27R Concrete chunk 0.388014 1.25 1.125 0.5 Concrete

06/07/12 9L-27R Concrete chunk 0.282192 1.5 1 0.25 Concrete

06/07/12 9L-27R Concrete chunk 0.317466 1.75 1 0.375 Concrete

06/07/12 9L-27R Rubber sealant 0.17637 2.5 0.5 0.25 Rubber

06/07/12 9L-27R Paint chips 0.246918 – – – Paint

06/07/12 9L-27R Metal bristles 0.070548 – – – Metal

06/07/12 9L-27R Glass pieces 0 – – – Glass

06/14/12 4R-22L Concrete chunk 1.093494 2 1 1 Concrete

06/14/12 4R-22L Concrete chunk 0.776028 1.5 0.75 0.5 Concrete

06/14/12 4R-22L Rubber sealant 0.35274 3 0.75 0.375 Rubber

06/14/12 4R-22L Paint chips 0.493836 – – – Paint

06/14/12 4R-22L Metal strips 0.17637 – – – Metal

06/14/12 4R-22L Wood chunk 0.141096 1.25 0.5 0.375 Wood

06/14/12 4R-22L O-ring 0.211644 2.5 2.5 0.25 Rubber

06/14/12 4R-22L Bolt 0.317466 1.25 0.5 0.5 Metal
B-18

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

06/14/12 4R-22L Bolt 0.317466 1.25 0.5 0.5 Metal

06/14/12 4R-22L Twisted metal 0.035274 3.75 2 0.063 Metal

06/14/12 4R-22L Nail 0.282192 3.25 0.25 0.25 Metal

06/14/12 4R-22L Metal staples 0.035274 – – – Metal

06/14/12 4R-22L Screw 0.035274 0.5 0.25 0.25 Metal

06/14/12 4R-22L Bolt 0.035274 0.75 0.25 0.25 Metal

06/14/12 4R-22L Metal cap 0.105822 0.375 0.25 0.25 Metal

06/14/12 4R-22L Metal washer 0 0.625 0.625 0.063 Metal

06/14/12 4R-22L Ball bearing 0 0.125 0.125 0.125 Metal

06/14/12 4R-22L Metal bristles 0 – – – Metal

06/20/12 14R-32L Asphalt chunk 0.70548 1.5 1.25 0.75 Asphalt

06/27/12 4L-22R Concrete chunk 0.88185 1.25 1 0.75 Concrete

06/27/12 4L-22R Paint chips 0.88185 – – – Paint

06/27/12 4L-22R Metal bristles 0 – – – Metal

06/27/12 4L-22R Wood chunk 0 1.5 0.5 0.375 Wood

06/27/12 4L-22R Bolt 0.035274 0.5 0.25 0.25 Metal

06/27/12 4L-22R Ball bearings 0 – – – Metal

07/05/12 4L-22R Piece of paper 0 2.75 2 0.063 Paper

07/05/12 4L-22R Piece of paper 0 3.25 2.5 0.063 Paper

07/05/12 4L-22R Concrete chunk 1.05822 2 1.5 0.75 Concrete

07/05/12 4L-22R Concrete chunk 0.52911 1.5 1.25 0.75 Concrete

07/05/12 4L-22R Concrete chunk 0.88185 1.5 1 1 Concrete

07/05/12 4L-22R Concrete chunk 0.35274 1.5 1.125 0.5 Concrete

07/05/12 4L-22R Metal bristles 0 – – – Metal

07/05/12 4L-22R Plastic zip tie 0 7.25 0.125 0.063 Plastic

07/05/12 4L-22R Paint chips 0 – – – Paint

07/05/12 4L-22R Wood chunk 2.11644 5.25 1.75 0.75 Wood

07/05/12 4L-22R Wood chunk 0 3 1.25 0.25 Wood

07/05/12 4L-22R Wood chunk 0 2.25 1 0.125 Wood

07/05/12 4L-22R Rubber sealant 0.70548 – – – Rubber

07/05/12 4L-22R Tar strip 0.740754 4.5 1.25 0.125 Tar

07/05/12 4L-22R Tar strip 0.246918 5.25 0.5 0.25 Tar

07/05/12 4L-22R Tar strip 0.423288 3 1 0.5 Tar

07/05/12 4L-22R Plastic strip 0.105822 7 0.375 0.125 Plastic

07/05/12 4L-22R Metal strip 0.035274 3 1.5 0.063 Metal

07/05/12 4L-22R Bottle cap 0.070548 1.375 1 0.5 Plastic

07/05/12 4L-22R Bottle cap 0.035274 1.25 1.125 0.25 Plastic

07/05/12 4L-22R Bottle cap 0.035274 1.125 1 0.125 Plastic

07/05/12 4L-22R Cigarette wrapper 0.105822 2.875 2.25 1 Paper

07/05/12 4L-22R Plastic sheet 0.035274 3.5 2.125 0.063 Plastic

07/05/12 4L-22R Plastic nozzle 0.070548 2.25 0.75 0.375 Plastic

07/05/12 4L-22R UAL tag 0.070548 2.5 2.25 0.125 Plastic

07/05/12 4L-22R American tag 0.070548 4.75 1.5 0.25 Plastic

07/05/12 4L-22R Ear plug 0 1.125 0.625 0.5 Other

07/05/12 4L-22R Threaded metal rod 0.388014 2.75 0.25 0.25 Metal

07/05/12 4L-22R Bolt 0.388014 0.875 0.5 0.5 Metal
B-19

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

07/05/12 4L-22R Bolt 0.141096 1.25 0.25 0.25 Metal

07/05/12 4L-22R Metal chunk 0.070548 0.5 0.5 0.5 Metal

07/05/12 4L-22R Bolt 0.070548 0.5 0.25 0.25 Metal

07/05/12 4L-22R Bolt 0.070548 0.5 0.375 0.375 Metal

07/05/12 4L-22R Bolt 0.070548 0.5 0.375 0.375 Metal

07/05/12 4L-22R Zipper handle 0.282192 1.25 0.5 0.125 Metal

07/05/12 4L-22R Zipper handle 0.105822 1.25 0.375 0.125 Metal

07/05/12 4L-22R Valve cap 0 0.5 0.5 0.375 Metal

07/05/12 4L-22R Metal cap 0.141096 1.25 0.875 0.125 Metal

07/05/12 4L-22R Glass pieces 0 – – – Glass

07/05/12 4L-22R Ball bearing 0 0.125 0.125 0.125 Metal

07/17/12 4R-22L Concrete chunk 1.728426 2 1.75 1 Concrete

07/17/12 4R-22L Concrete chunk 0.776028 1.75 1.25 0.5 Concrete

07/17/12 4R-22L Concrete chunk 0.493836 1.25 1 0.75 Concrete

07/17/12 4R-22L Concrete chunk 0.317466 1.25 1 0.25 Concrete

07/17/12 4R-22L Paint chips 1.199316 – – – Paint

07/17/12 4R-22L Tar strip 0.35274 2.25 0.75 0.5 Tar

07/17/12 4R-22L Tar strip 0.211644 1.5 1 0.5 Tar

07/17/12 4R-22L Bolt 0.211644 0.75 0.5 0.5 Metal

07/17/12 4R-22L Bolt 0.035274 0.875 0.375 0.375 Metal

07/17/12 4R-22L Metal disc 0 0.375 0.375 0.125 Metal

07/17/12 4R-22L Lock washer 0.035274 0.5 0.5 0.125 Metal

07/17/12 4R-22L Washer_1 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Washer_2 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Washer_3 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Washer_4 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Washer_5 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Washer_6 0.035274 0.625 0.625 0.125 Metal

07/17/12 4R-22L Metal bristles 0 – – – Metal

07/17/12 4R-22L Ball bearing 0 0.125 0.125 0.125 Metal

07/17/12 4R-22L Metal clasp 0 0.375 0.125 0.125 Metal

08/07/12 9R-27L Toothbrush wrapper 0.105822 8 1 0.25 Plastic

08/07/12 9R-27L Asphalt chunk 0.811302 1.5 1 1 Asphalt

08/07/12 9R-27L Asphalt chunk 0.52911 1.75 0.75 0.5 Asphalt

08/07/12 9R-27L Paint chips 0.423288 – – – Paint

08/07/12 9R-27L Rubber sealant 0.211644 2.25 1 0.125 Rubber

08/07/12 9R-27L Rubber sealant 0.105822 2.5 0.75 0.5 Rubber

08/07/12 9R-27L Metal bristles 0 – – – Metal

08/07/12 9R-27L Metal strip 0.035274 4.25 0.125 0.063 Metal

08/07/12 9R-27L Zipper 0.246918 1.5 0.5 0.125 Metal

08/07/12 9R-27L Zipper 0.17637 1.25 0.5 0.125 Metal

08/07/12 9R-27L Zipper 0.282192 1.5 0.5 0.125 Metal

08/07/12 9R-27L Zipper 0.141096 1.5 0.375 0.125 Metal

08/07/12 9R-27L Plastic piece 0.035274 0.75 0.625 0.125 Plastic

08/07/12 9R-27L Safety pin 0 1.5 0.5 0.063 Metal

08/07/12 9R-27L Bolt_1 0.070548 0.5 0.25 0.25 Metal
B-20

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

08/07/12 9R-27L Bolt_2 0.035274 0.625 0.25 0.25 Metal

08/07/12 9R-27L Bolt_3 0.035274 0.5 0.25 0.25 Metal

08/07/12 9R-27L Bolt_4 0.035274 0.5 0.25 0.25 Metal

08/07/12 9R-27L Bolt_5 0.035274 0.5 0.25 0.25 Metal

08/07/12 9R-27L Bolt_6 0.070548 0.75 0.25 0.25 Metal

08/07/12 9R-27L Bolt_7 0.070548 0.5 0.25 0.25 Metal

08/07/12 9R-27L Bolt_8 0.070548 0.375 0.25 0.25 Metal

08/07/12 9R-27L Metal cap 0.17637 0.5 0.375 0.375 Metal

08/07/12 9R-27L Nut 0.211644 0.5 0.5 0.25 Metal

08/07/12 9R-27L Metal shard 0 0.375 0.375 0.063 Metal

08/07/12 9R-27L Metal clasp 0.035274 0.75 0.5 0.125 Metal

08/07/12 9R-27L Metal clasp 0.070548 0.75 0.5 0.125 Metal

08/07/12 9R-27L Broken zipper 0.035274 0.5 0.375 0.125 Metal

08/15/12 14R-32L Wood chunk 0.246918 4.375 0.75 0.5 Wood

08/15/12 14R-32L Paint chips 0.246918 – – – Paint

08/15/12 14R-32L Broken zipper handle 0.105822 1.25 0.5 0.125 Metal

08/15/12 14R-32L Metal bristles 0.035274 – – – Metal

08/23/12 4R-22L Gatorade cap 0.105822 1.75 1.75 0.5 Plastic

08/23/12 4R-22L Rubber sealant 0.423288 4 2 0.125 Rubber

08/23/12 4R-22L Rubber sealant 0.35274 3 2.125 0.125 Rubber

08/23/12 4R-22L Rubber sealant 0.246918 2.5 2 0.125 Rubber

08/23/12 4R-22L Rubber sealant 0.211644 4 1.5 0.125 Rubber

08/23/12 4R-22L Rubber sealant 0.105822 1.75 1.625 0.063 Rubber

08/23/12 4R-22L Rubber sealant 0.070548 1.5 1.25 0.125 Rubber

08/23/12 4R-22L Paint chips 0.35274 – – – Paint

08/23/12 4R-22L Asphalt chunk 1.481508 2 1.5 0.75 Asphalt

08/23/12 4R-22L Wire 0.246918 10.5 0.25 0.125 Metal

08/23/12 4R-22L Tar strip 0.141096 1.75 0.5 0.5 Tar

08/23/12 4R-22L Tar strip 0.105822 1.75 0.625 0.25 Tar

08/23/12 4R-22L Tar strip 0.17637 2 0.5 0.375 Tar

08/23/12 4R-22L Tar strip 0.17637 2.5 0.5 0.375 Tar

08/23/12 4R-22L Twig 0 4 0.25 0.25 Wood

08/23/12 4R-22L Twig 0 3.5 0.25 0.25 Wood

08/23/12 4R-22L Twig 0 3 0.25 0.25 Wood

08/23/12 4R-22L Zipper handle 0.246918 1.75 0.625 0.125 Metal

08/23/12 4R-22L Metal strip 0.105822 6.125 0.125 0.063 Metal

08/23/12 4R-22L Metal strip 0.070548 5.25 0.125 0.063 Metal

08/23/12 4R-22L Metal strip 0 1.75 0.125 0.063 Metal

08/23/12 4R-22L Plastic tape 0.070548 2.125 2 0.063 Plastic

08/23/12 4R-22L Glass pieces 0.141096 – – – Glass

08/23/12 4R-22L Metal chunk 0.211644 0.75 0.375 0.25 Metal

08/23/12 4R-22L Washer 0.035274 0.5 0.5 0.125 Metal

08/23/12 4R-22L Washer 0.035274 0.625 0.625 0.063 Metal

08/23/12 4R-22L Gold foil 0 0.75 0.375 0.063 Metal

08/23/12 4R-22L Ball bearing 0 0.125 0.125 0.125 Metal

08/23/12 4R-22L Ball bearing 0 0.125 0.125 0.125 Metal
B-21

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

08/23/12 4R-22L Metal bristles 0.17637 – – – Metal

09/06/12 4L-22R Dirt chunk 0.670206 2.25 2 0.5 Other

09/06/12 4L-22R Dirt chunk 0.317466 1.5 1 0.75 Other

10/04/12 10-28 Asphalt chunk 6.137676 3.25 2 1.5 Asphalt

10/04/12 10-28 Asphalt chunk 1.516782 2 1.5 1 Asphalt

10/04/12 10-28 Foam chunk 0.070548 2.5 1.75 1.25 Rubber

10/04/12 10-28 Foam chunk 0.141096 2 1.25 0.5 Rubber

10/04/12 10-28 Tape strip 0.105822 9 2 0.063 Other

10/04/12 10-28 Brick chunk 0.317466 1.5 1 0.5 Concrete

10/04/12 10-28 Paint chips 0.282192 – – – Paint

10/04/12 10-28 Metal spool 0.035274 0.625 0.625 0.25 Metal

10/04/12 10-28 Zipper handle 0.17637 1.25 0.375 0.125 Metal

10/04/12 10-28 Bolt 0.035274 0.75 0.25 0.25 Metal

10/04/12 10-28 Glass 0.141096 – – – Glass

10/11/12 9L-27R Asphalt chunk 1.093494 1.5 1.25 1 Asphalt

10/11/12 9L-27R Tar strip 1.128768 8 1.5 0.5 Tar

10/11/12 9L-27R Tar strip 0.317466 5.5 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.246918 4.5 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.246918 4.625 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.282192 5.25 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.282192 4 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.211644 3 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.17637 2.875 0.75 0.25 Tar

10/11/12 9L-27R Tar strip 0.105822 2 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.317466 4.75 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.141096 2.5 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.246918 3.75 0.5 0.25 Tar

10/11/12 9L-27R Tar strip 0.141096 2.25 0.5 0.25 Tar

10/11/12 9L-27R Paint chips 0.599658 – – – Paint

10/11/12 9L-27R Rubber sealant 0.211644 2.5 1.5 0.125 Rubber

10/11/12 9L-27R Concrete chunk 0.35274 1.5 1 0.375 Concrete

10/11/12 9L-27R Zipper handle 0.105822 1.5 0.5 0.125 Metal

10/11/12 9L-27R Zipper handle 0.211644 1.75 0.5 0.125 Metal

10/11/12 9L-27R Zipper handle 0.246918 1.25 0.5 0.125 Metal

10/11/12 9L-27R Cardboard tube 0.070548 2 0.5 0.5 Paper

10/11/12 9L-27R Piece of Rubber 0.211644 2.25 0.625 0.25 Rubber

10/11/12 9L-27R Balled up tape 0.141096 1.75 1.75 0.5 Other

10/11/12 9L-27R Plastic strip 0 5.5 0.125 0.125 Plastic

10/11/12 9L-27R Metal bristles 0 – – – Metal

10/11/12 9L-27R Nut 0.246918 0.5 0.25 0.25 Metal

10/11/12 9L-27R Bolt_1 0.070548 0.75 0.25 0.25 Metal

10/11/12 9L-27R Bolt_2 0.070548 0.5 0.25 0.25 Metal

10/11/12 9L-27R Bolt_3 0.070548 0.625 0.25 0.25 Metal

10/11/12 9L-27R Bolt_4 0.070548 0.5 0.375 0.375 Metal

10/11/12 9L-27R Bolt_5 0.070548 0.5 0.375 0.375 Metal

10/11/12 9L-27R Bolt_6 0.035274 0.5 0.25 0.25 Metal
B-22

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

10/11/12 9L-27R Bolt_7 0.035274 0.5 0.25 0.25 Metal

10/11/12 9L-27R Bolt_8 0.035274 0.375 0.25 0.25 Metal

10/11/12 9L-27R Metal cap 0.035274 0.5 0.25 0.25 Metal

10/16/12 4R-22L American tag 0.035274 1.75 0.875 0.375 Plastic

10/16/12 4R-22L Rubber sealant 0.105822 2.5 1.25 0.125 Rubber

10/16/12 4R-22L Rubber sealant 0.246918 1.25 1 0.75 Rubber

10/16/12 4R-22L Rubber sealant 0.423288 4 0.5 0.5 Rubber

10/16/12 4R-22L Paint chips 0.246918 – – – Paint

10/16/12 4R-22L Concrete chunk 0.458562 1.25 0.75 0.75 Concrete

10/16/12 4R-22L Asphalt chunk 0.388014 1.5 1 0.5 Asphalt

10/16/12 4R-22L Rubber part 0.634932 3.25 0.875 0.25 Rubber

10/16/12 4R-22L Broken zip tie 0 2.5 0.5 0.5 Plastic

10/16/12 4R-22L Zipper handle 0.211644 1.5 0.625 0.125 Metal

10/16/12 4R-22L Nut 0.105822 0.375 0.375 0.25 Metal

10/16/12 4R-22L Washer 0 0.625 0.625 0.063 Metal

10/16/12 4R-22L Paper clip 0 1.25 0.375 0.063 Metal

10/16/12 4R-22L Metal bristles 0 – – – Metal

11/01/12 14R-32L Foam strip 1.128768 11.5 0.75 0.5 Rubber

11/01/12 14R-32L Paint chips 0.987672 – – – Paint

11/01/12 14R-32L Rubber sealant 0.388014 3 2.5 0.063 Rubber

11/01/12 14R-32L Rubber sealant 0.35274 3 1.75 0.063 Rubber

11/01/12 14R-32L Rubber sealant 0.246918 2.5 1.5 0.063 Rubber

11/01/12 14R-32L Rubber sealant 0.17637 2.5 1.125 0.063 Rubber

11/01/12 14R-32L Rubber sealant 0.105822 2.125 0.625 0.063 Rubber

11/01/12 14R-32L Rubber sealant 0.141096 1.5 1.25 0.063 Rubber

11/01/12 14R-32L Asphalt chunk 1.446234 1.875 1.25 1.125 Asphalt

11/01/12 14R-32L Asphalt chunk 0.88185 1.5 1 0.75 Asphalt

11/01/12 14R-32L Asphalt chunk 0.634932 1.75 0.875 0.75 Asphalt

11/08/12 9R-27L Concrete chunk 2.010618 2.5 1.5 0.5 Concrete

11/08/12 9R-27L Concrete chunk 1.516782 2.5 1.375 0.75 Concrete

11/08/12 9R-27L Asphalt chunk 0.952398 1.5 1.25 1 Asphalt

11/08/12 9R-27L Asphalt chunk 0.776028 2 1 0.625 Asphalt

11/08/12 9R-27L Rubber sealant 0.811302 2.125 2 0.5 Rubber

11/08/12 9R-27L Rubber sealant 0.246918 2.5 0.5 0.5 Rubber

11/08/12 9R-27L Rubber sealant 0.141096 2.5 1.125 0.125 Rubber

11/08/12 9R-27L Broken piece of plastic 0.493836 5 1.25 0.5 Plastic

11/08/12 9R-27L Paint chips 1.693152 – – – Paint

11/08/12 9R-27L Rubber sealant 0.070548 2.25 1 0.125 Rubber

11/08/12 9R-27L Bolt 1.305138 2.5 0.625 0.625 Metal

11/08/12 9R-27L Bolt 0.105822 1.125 0.375 0.375 Metal

11/08/12 9R-27L Bolt 0.458562 1 0.5 0.5 Metal

11/08/12 9R-27L Bolt 0.070548 0.5 0.375 0.375 Metal

11/08/12 9R-27L Bolt 0.035274 0.625 0.25 0.25 Metal

11/08/12 9R-27L Bolt 0.282192 0.75 0.75 0.75 Metal

11/08/12 9R-27L Zipper handle_1 0.282192 1.25 0.5 0.125 Metal

11/08/12 9R-27L Zipper handle_2 0.35274 1.375 0.625 0.125 Metal
B-23

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

11/08/12 9R-27L Zipper handle_3 0.141096 1.5 0.5 0.125 Metal

11/08/12 9R-27L Zipper handle_4 0.17637 1.625 0.375 0.125 Metal

11/08/12 9R-27L Zipper handle_5 0.070548 1.125 0.375 0.125 Metal

11/08/12 9R-27L Zipper handle_6 0.17637 1.25 0.375 0.125 Metal

11/08/12 9R-27L Zipper handle_7 0.141096 1.25 0.5 0.125 Metal

11/08/12 9R-27L Zipper handle_8 0.246918 1.5 0.5 0.125 Metal

11/08/12 9R-27L Metal strip 0.141096 4 4 0.125 Metal

11/08/12 9R-27L Plastic strip 0.035274 4.5 2 0.063 Plastic

11/08/12 9R-27L Metal chunk 0.246918 1.75 1.125 0.063 Metal

11/08/12 9R-27L Glass chunk 0.105822 1 0.625 0.25 Glass

11/08/12 9R-27L Zipper handle_9 0.17637 1.5 0.5 0.125 Metal

11/08/12 9R-27L Screw 0.070548 0.75 0.375 0.375 Metal

11/08/12 9R-27L Metal piece 0 0.875 0.25 0.25 Metal

11/08/12 9R-27L Washer 0.35274 1 1 0.125 Metal

11/08/12 9R-27L Washer 0 0.375 0.125 0.125 Metal

11/08/12 9R-27L Lock washer 0.035274 0.625 0.125 0.125 Metal

11/08/12 9R-27L Rusted penny 0.105822 0.75 0.063 0.063 Metal

11/08/12 9R-27L Metal strip 0 1.75 0.125 0.063 Metal

11/08/12 9R-27L Wire piece 0.070548 1.25 0.5 0.125 Metal

11/08/12 9R-27L Broken zip tie 0 1.5 0.25 0.125 Plastic

11/08/12 9R-27L Metal hook 0.070548 1.125 0.5 0.125 Metal

11/08/12 9R-27L Metal ring 0 0.375 0.375 0.125 Metal

11/08/12 9R-27L Metal clip 0.035274 1.125 0.75 0.125 Metal

11/08/12 9R-27L Metal scrap 0.035274 0.625 0.375 0.125 Metal

11/08/12 9R-27L Metal scrap 0 1 0.375 0.063 Metal

11/08/12 9R-27L Gear component 0.035274 1.25 0.125 0.125 Metal

11/08/12 9R-27L Screw 0.070548 1.25 0.25 0.25 Metal

11/08/12 9R-27L Metal clasp 0 0.75 0.375 0.125 Metal

11/08/12 9R-27L Metal bristles 0 – – – Metal

11/08/12 9R-27L Metal cap 0 0.375 0.375 0.25 Metal

11/13/12 9L-27R Tar strip 0.211644 2.25 0.5 0.25 Tar

11/13/12 9L-27R Bolt 0.070548 0.5 0.375 0.375 Metal

11/13/12 9L-27R Metal hook 0.070548 1.25 0.75 0.125 Metal

11/13/12 9L-27R Metal cylinder 0.070548 0.375 0.25 0.25 Metal

11/13/12 9L-27R Paint chips 0.70548 – – – Paint

11/13/12 9L-27R Metal strip 0 1.5 0.125 0.063 Metal

11/13/12 9L-27R Metal bristles 0 – – – Metal

12/05/12 14L-32R Asphalt chunk 2.927742 2.5 1.75 1 Asphalt

12/05/12 14L-32R Rock 1.340412 1.75 1.5 0.75 Other

12/05/12 14L-32R Rubber sealant 0.423288 2.75 1.5 0.5 Rubber

12/05/12 14L-32R Piece of plastic 0.035274 1.5 0.75 0.125 Plastic

12/05/12 14L-32R Metal strip 0.035274 2 0.125 0.063 Metal

12/05/12 14L-32R Metal strip 0 1.875 0.125 0.063 Metal

12/05/12 14L-32R Metal strip 0 1.75 0.125 0.063 Metal

12/05/12 14L-32R Metal bristle 0 – – – Metal

12/19/12 14R-32L Styrofoam 0 2.84 1.17 0.3 Plastic
B-24

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

12/19/12 14R-32L Duct tape 0.070548 2.5 0.7 0.2 Other

12/19/12 14R-32L Rubber sealant 0.388014 3.23 0.99 0.3 Rubber

12/19/12 14R-32L Blistex wrapper 0.070548 2.21 0.72 0.12 Plastic

12/19/12 14R-32L Paint chips 0.846576 – – – Paint

12/19/12 14R-32L Moisture absorbent 0.035274 1.55 0.73 0.14 Other

12/19/12 14R-32L Coffee stirrer 0.035274 5.5 0.57 0.1 Plastic

12/19/12 14R-32L Metal strip 0.105822 6.5 0.125 0.062 Metal

12/19/12 14R-32L Bolt_1 0.070548 0.6 0.35 0.35 Metal

12/19/12 14R-32L Bolt_2 0.070548 0.6 0.35 0.35 Metal

12/19/12 14R-32L Bolt_3 0.070548 0.6 0.35 0.35 Metal

12/19/12 14R-32L Bolt_4 0.035274 0.47 0.35 0.35 Metal

12/19/12 14R-32L Metal bristles 0 – – – Metal

12/19/12 14R-32L Staple 0 0.5 0.15 0.02 Metal

12/19/12 14R-32L Glass 0 – – – Glass

01/09/13 4R-22L Zipper handle_1 0.35274 1.74 0.5 0.14 Metal

01/09/13 4R-22L Zipper handle_2 0.211644 1.45 0.43 0.13 Metal

01/09/13 4R-22L Zipper handle_3 0.317466 1.63 0.5 0.13 Metal

01/09/13 4R-22L Zipper handle_4 0.282192 1.2 0.54 0.15 Metal

01/09/13 4R-22L Zipper handle_5 0.211644 1.42 0.45 0.14 Metal

01/09/13 4R-22L Zipper handle_6 0.317466 1.71 0.48 0.12 Metal

01/09/13 4R-22L Zipper handle_7 0.211644 1.76 0.64 0.17 Metal

01/09/13 4R-22L Zipper handle_8 0.282192 1.5 0.56 0.16 Metal

01/09/13 4R-22L Zipper handle_9 0.141096 1.53 0.46 0.1 Metal

01/09/13 4R-22L Zipper handle_10 0.282192 1.19 0.47 0.14 Metal

01/09/13 4R-22L Zipper handle_11 0.282192 1.55 0.47 0.13 Metal

01/09/13 4R-22L Zipper handle_12 0.105822 0.95 0.5 0.08 Metal

01/09/13 4R-22L Zipper handle_13 0.035274 1.27 0.41 0.06 Metal

01/09/13 4R-22L Zipper handle_14 0.141096 0.64 0.64 0.21 Metal

01/09/13 4R-22L Zipper handle_15 0.141096 0.96 0.52 0.09 Metal

01/09/13 4R-22L Metal piece 0.599658 2.05 0.78 0.41 Metal

01/09/13 4R-22L Paint chips 0.811302 – – – Paint

01/09/13 4R-22L Rubber sealant 0.52911 2.33 0.79 0.57 Rubber

01/09/13 4R-22L Rubber sealant 0.317466 1.69 0.71 0.59 Rubber

01/09/13 4R-22L Rubber sealant 0.141096 1.72 0.97 0.3 Rubber

01/09/13 4R-22L Bolt 0 – – – Metal

01/09/13 4R-22L Bolt 0 – – – Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal
B-25

Date Runway Item Description

Weight

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.70548 1.18 0.58 0.58 Metal

01/09/13 4R-22L Bolt 0.105822 0.77 0.31 0.31 Metal

01/09/13 4R-22L Bolt 0.141096 0.78 0.31 0.31 Metal

01/09/13 4R-22L Bolt 0.070548 0.61 0.31 0.31 Metal

01/09/13 4R-22L Nail 0.105822 2.37 0.26 0.26 Metal

01/09/13 4R-22L Rusted spike 0.493836 1.75 0.48 0.43 Metal

01/09/13 4R-22L Metal cylinder 0.17637 0.82 0.27 0.27 Metal

01/09/13 4R-22L Metal cylinder 0.070548 0.43 0.25 0.25 Metal

01/09/13 4R-22L Screw in plastic 0.035274 0.69 0.4 0.3 Other

01/09/13 4R-22L Metal cylinder 0.035274 0.67 0.13 0.13 Metal

01/09/13 4R-22L Metal strip 0.035274 1.65 0.27 0.03 Metal

01/09/13 4R-22L Magnet 0.141096 1.78 0.52 0.11 Metal

01/09/13 4R-22L Metal coil 0 1.28 1.11 0.04 Metal

01/09/13 4R-22L Metal gadget 0.493836 1.43 1.32 0.33 Metal

01/09/13 4R-22L Metal cylinder 0.105822 0.93 0.13 0.13 Metal

01/09/13 4R-22L Metal scrap 0.141096 0.91 0.72 0.09 Metal

01/09/13 4R-22L Metal hook 0.035274 0.59 0.59 0.11 Metal

01/09/13 4R-22L Metal scrap 0.070548 1.04 0.44 0.25 Metal

01/09/13 4R-22L Metal scrap 0 1.03 0.16 0.07 Metal

01/09/13 4R-22L Washer 0.070548 0.74 0.74 0.05 Metal

01/09/13 4R-22L Washer 0.035274 0.63 0.63 0.07 Metal

01/09/13 4R-22L Washer 0 0.5 0.5 0.03 Metal

01/09/13 4R-22L Plastic strip 0 3.25 0.06 0.06 Plastic

01/09/13 4R-22L Key_1 0.035274 0.98 0.62 0.04 Metal

01/09/13 4R-22L Key_2 0.035274 0.98 0.62 0.04 Metal

01/09/13 4R-22L Broken key 0.035274 0.61 0.45 0.04 Metal

01/09/13 4R-22L Penny 0.105822 0.75 0.75 0.06 Metal

01/09/13 4R-22L Metal disk 0.035274 0.49 0.49 0.08 Metal

01/09/13 4R-22L Metal bristles 0.211644 – – – Metal

02/13/13 14R-32L Plastic strip 0 7 0.125 0.125 Plastic

02/13/13 14R-32L Plastic strip 0 7 0.125 0.125 Plastic

02/13/13 14R-32L Joint material 0.388014 3.375 0.5 0.5 Rubber

02/13/13 14R-32L Joint material 0.423288 2.75 1.5 0.625 Rubber

02/13/13 14R-32L Plastic chunk 0.035274 2.5 0.375 0.125 Plastic

02/13/13 14R-32L Glass chunk 0 0.25 0.25 0.125 Glass

02/13/13 14R-32L Screw 0.035274 0.625 0.375 0.375 Metal

02/13/13 14R-32L Screw 0.070548 0.5 0.375 0.375 Metal

02/13/13 14R-32L Nut 0.141096 0.5 0.5 0.25 Metal

02/13/13 14R-32L Metal fragment 0.070548 0.625 0.5 0.5 Metal

02/13/13 14R-32L Metal fragment 0.035274 0.5 0.375 0.375 Metal

02/13/13 14R-32L Metal bristles 12.487 – – – Metal

03/07/13 10-28 Metal bristles 0.070548 – – – Metal

03/07/13 10-28 Weed eater string 0 4.5 0.125 0.125 Plastic

03/21/13 9L-27R Metal bristles 0.141096 – – – Metal

03/27/13 4R-22L Metal bristles 3.386304 – – – Metal
B-26

Date Runway Item Description

Weight 

(oz)

Length 

(in.)

Width 

(in.)

Height 

(in.)

Material 

Type

03/27/13 4R-22L Metal strip 0.070548 5.25 0.125 0.125 Metal

03/27/13 4R-22L Weed eater 0.246918 – – – Plastic

03/27/13 4R-22L Metal strip 0.070548 6 0.125 0.125 Metal

03/27/13 4R-22L “Not Phillips” screw 0.035274 0.5 0.375 0.375 Metal

03/27/13 4R-22L Blue screw 0.070548 0.625 0.375 0.375 Metal

03/27/13 4R-22L Screw 0.070548 0.625 0.375 0.375 Metal

03/27/13 4R-22L Metal washer 0 0.375 0.375 0.125 Metal

03/27/13 4R-22L Weed eater bits 0 – – – Plastic

03/27/13 4R-22L Yellow tar sheet 1.269864 6 5 0.125 Tar

03/27/13 4R-22L Yellow tar sheet 1.05822 4.5 3.5 0.125 Tar

03/27/13 4R-22L Metal strips 0.246918 – – – Metal

03/27/13 4R-22L Hex bolt 0.599658 1 0.625 0.625 Metal

03/27/13 4R-22L Tar chunk 0.282192 2.75 0.875 0.5 Tar

03/27/13 4R-22L Concrete chunk 2.151714 2.125 1.5 1.625 Concrete

03/27/13 4R-22L Concrete chunk 1.728426 1.75 1.5 1.25 Concrete

03/27/13 4R-22L Concrete chunk 1.23459 2 1.5 0.875 Concrete

03/27/13 4R-22L Concrete chunk 0.846576 1.875 1.125 0.75 Concrete

03/27/13 4R-22L Concrete chunk 0.670206 1.75 1 0.75 Concrete

04/16/13 10-28 Tar 6.666786 4.5 4 1.5 Tar

04/30/13 10-28 Metal bristles 0.246918 – – – Metal

04/30/13 10-28 Weed eater 0.317466 – – – Plastic

05/08/13 9L-27R Metal bristles 0.070548 – – – Metal