35336 Federal Register / Vol. 76, No. 117 / Friday, June 17, 2011 / Rules and Regulations 

Issued in Fort Worth, Texas, on May 17, 

2011. 

Kim Smith, 

Manager, Rotorcraft Directorate, Aircraft 

Certification Service. 

[FR Doc. 2011–14247 Filed 6–16–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2010–0957; Directorate 

Identifier 2010–NM–062–AD; Amendment 

39–16718; AD 2011–12–11] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Model 767 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: We are superseding an 

existing airworthiness directive (AD) for 

the products listed above. That AD 

currently requires, for certain airplanes, 

reworking the bonding jumper 

assemblies on the drain tube assemblies 

of the slat track housing of the wings. 

For certain other airplanes, the existing 

AD requires repetitive inspections of the 

drain tube assemblies of the slat track 

housing of the wings to find 

discrepancies, corrective actions if 

necessary, and terminating action for 

the repetitive inspections. This new AD 

also requires replacing the drain tube 

assemblies. For certain airplanes, this 

new AD also requires installing an 

additional electrostatic bond path for 

the number 5 and 8 inboard slat track 

drain tube assemblies. For certain other 

airplanes, this new AD also requires 

reworking the bonding jumper 

assembly. This new AD also revises the 

applicability to include additional 

airplanes. This AD was prompted by (1) 

reports of fuel leaks from certain drain 

locations of the slat track housing near 

the engine exhaust nozzle, which could 

result in a fire when the airplane is 

stationary, or taxiing at low speed; (2) 

reports of a bonding jumper assembly of 

certain drain tubes that did not meet 

bonding specifications and could result 

in electrostatic discharge and an in-tank 

ignition source; and (3) reports of fuel 

leaks onto the main landing gear (MLG) 

as a result of a cracked drain tube at the 

number 5 or 8 slat track housing, which 

could let fuel drain from the main fuel 

tanks into the dry bay area of the wings 

and onto hot MLG brakes and result in 

a fire. 

DATES: This AD is effective July 22, 

2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in the AD 

as of July 27, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain other publications listed in 

this AD as of August 28, 2001 (66 FR 

38350, July 24, 2001). 

ADDRESSES: For service information 

identified in this AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P. O. Box 3707, 

MC 2H–65, Seattle, Washington 98124– 

2207; telephone 206–544–5000, 

extension 1; fax 206–766–5680; e-mail 

me.boecom@boeing.com; Internet 

https://www.myboeingfleet.com. You 

may review copies of the referenced 

service information at the FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington. 

For information on the availability of 

this material at the FAA, call 425–227– 

1221. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http:// 

www.regulations.gov; or in person at the 

Docket Management Facility between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. The AD 

docket contains this AD, the regulatory 

evaluation, any comments received, and 

other information. The address for the 

Docket Office (phone: 800–647–5527) is 

Document Management Facility, U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue, SE., Washington, 

DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Rebel Nichols, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, 

Seattle Aircraft Certification Office 

(ACO), 1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; phone: 425– 

917–6509; fax: 425–917–6590; e-mail: 

rebel.nichols@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2001–14–19, 

amendment 39–12330 (66 FR 38350, 

July 24, 2001). That AD applies to the 

specified products. The NPRM was 

published in the Federal Register on 

October 7, 2010 (75 FR 61999). That 

NPRM proposed to continue to require, 

for certain airplanes, reworking the 

bonding jumper assemblies on the drain 

tube assemblies of the slat track housing 

of the wings. That NPRM also proposed 

to continue to require, for certain other 

airplanes, repetitive inspections of the 

drain tube assemblies of the slat track 

housing of the wings to find 

discrepancies, corrective actions if 

necessary, and terminating action for 

the repetitive inspections. That NPRM 

also proposed to require replacing the 

drain tube assemblies, and, for certain 

airplanes, installing an additional 

electrostatic bond path for the number 

5 and 8 inboard slat track drain tube 

assemblies. For certain other airplanes, 

that NPRM also proposed to require 

reworking the bonding jumper 

assembly. That NPRM also proposed to 

revise the applicability to include 

additional airplanes. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. The 

following presents the comments 

received on the proposal and the FAA’s 

response to each comment. 

Support for the NPRM 

Boeing concurs with the contents of 

the NPRM. 

Request To Clarify Service Information 

Continental Airlines requested that 

we revise the NPRM to correct 

discrepancies in Boeing Service Bulletin 

767–57A0094, Revision 2, dated 

December 17, 2009. (That service 

bulletin was cited in the NPRM as the 

appropriate source of service 

information for the drain tube 

replacement on Model 767–200, –300, 

and –300F series airplanes.) In Figure 13 

(Sheet 2 of 5) on page 104, and Figure 

14 (Sheet 2 of 5) on page 109, the view 

identified as ‘‘C’’ should be identified as 

‘‘A.’’ These discrepancies were 

communicated to Boeing and confirmed 

as discrepancies. 

We agree and have revised paragraph 

(j) in this final rule to specify these 

corrections. 

Request To Clarify Requirements 

American Airlines stated that the 

Relevant Service Information section of 

the NPRM provides the current 

requirements (for AD 2001–14–19) but 

does not provide in detail the new 

additional requirements for the NPRM. 

That paragraph, according to the 

commenter, merely provides 

information regarding the service 

bulletins, not the specific proposed 

requirements. The commenter added 

that the Relevant Service Information 

section does not explain whether the 

new actions are to be done in 

accordance with the original or revised 

service information. The commenter 

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Federal Register / Vol. 76, No. 117 / Friday, June 17, 2011 / Rules and Regulations 35337 

requested that the final rule provide in 

detail the specific actions that would be 

required to comply with the new AD. 

We agree to provide clarification. The 

commenter is correct that the Relevant 

Service Information section describes 

only the procedures specified in the 

service information referenced in an 

AD. When we supersede an existing AD, 

the Relevant Service Information section 

highlights the differences in any new 

service information to provide notice for 

the public to comment on the new 

material. New service information 

includes new service bulletins as well 

as significant changes in revisions to 

previously described service bulletins. 

The proposed requirements are then 

provided in ‘‘The FAA’s Determination 

and Requirements of the Proposed AD.’’ 

We have not changed the final rule 

regarding this issue. 

Explanation of Change to NPRM 

We have revised the Costs of 

Compliance section in this final rule to 

provide updated figures for the 

estimated number of affected airplanes. 

This change does not significantly affect 

the fleet cost. 

Conclusion 

We reviewed the relevant data, 

considered the comments received, and 

determined that air safety and the 

public interest require adopting the AD 

with the change described previously. 

We also determined that this change 

will not increase the economic burden 

on any operator or increase the scope of 

the AD. 

Costs of Compliance 

There are about 920 airplanes of the 

affected design in the worldwide fleet. 

The following table provides the 

estimated costs for U.S. operators to 

comply with this proposed AD. The 

average labor rate is $85 per hour. 

ESTIMATED COSTS

Action Work hours Parts Cost per airplane 

Number of 

U.S.-registered 

airplanes 

Fleet cost 

Inspection (required by AD 2001– 

14–19).

1 ................................... $0 $85 per inspection 

cycle.

273 $23,205 per inspection 

cycle. 

Drain tube replacement (required by 

AD 2001–14–19).

12 ................................. 5,236 $6,256 .......................... 273 $1,707,888. 

Bonding jumper assembly rework 

(required by AD 2001–14–19).

4 ................................... 322 $662 ............................. 48 $31,776. 

Drain tube replacement (new action) Between 7 and 11, depending on configuration.1,117 Between $1,712 and 

$2,052.

412 Between $705,344 and 

$845,424. 

We estimate the following costs to 

rework the drain tube assembly that 

might be required based on the results 

of the proposed inspection. We have no 

way of determining the number of 

aircraft that might need this rework. 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Drain tube assembly rework ........................... 4 work-hours × $85 per hour = $340 .............. Negligible .......................................... $340 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in subtitle VII, 

part A, subpart III, section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have determined that this AD will 

not have federalism implications under 

Executive Order 13132. This AD will 

not have a substantial direct effect on 

the States, on the relationship between 

the national government and the States, 

or on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979), 

(3) Will not affect intrastate aviation 

in Alaska, and 

(4) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

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35338 Federal Register / Vol. 76, No. 117 / Friday, June 17, 2011 / Rules and Regulations 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by 

removing airworthiness directive (AD) 

2001–14–19, Amendment 39–12330 (66 

FR 38350, July 24, 2001), and adding the 

following new AD: 

2011–12–11 The Boeing Company: 

Amendment 39–16718; Docket No. 

FAA–2010–0957; Directorate Identifier 

2010–NM–062–AD. 

Effective Date 

(a) This airworthiness directive (AD) is 

effective July 22, 2011. 

Affected ADs 

(b) This AD supersedes AD 2001–14–19, 

Amendment 39–12330. 

Applicability 

(c) This AD applies to The Boeing 

Company airplanes, certificated in any 

category, identified in paragraphs (c)(1) and 

(c)(2) of this AD. 

(1) Model 767–200, –300, and –300F series 

airplanes, as identified in Boeing Service 

Bulletin 767–57A0094, Revision 2, dated 

December 17, 2009. 

(2) Model 767–400ER series airplanes, as 

identified in Boeing Service Bulletin 767– 

57A0095, Revision 2, dated December 17, 

2009. 

Subject 

(d) Air Transport Association (ATA) of 

America Code 57: Wings. 

Unsafe Condition 

(e) This AD results from (1) reports of fuel 

leaks from certain drain locations of the slat 

track housing near the engine exhaust nozzle, 

which could result in a fire when the 

airplane is stationary, or taxiing at low speed; 

(2) reports of a bonding jumper assembly of 

certain drain tubes that did not meet bonding 

specifications and could result in 

electrostatic discharge and an in-tank 

ignition source; and (3) reports of fuel leaks 

onto the main landing gear (MLG) as a result 

of a cracked drain tube at the number 5 or 

8 slat track housing, which could let fuel 

drain from the main fuel tanks into the dry 

bay area of the wings and onto hot MLG 

brakes and result in a fire. 

Compliance 

(f) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Restatement of Requirements of AD 2001– 

14–19, Amendment 39–12330, With Revised 

Service Information 

Repetitive Inspections/Corrective Action 

(g) For airplanes identified in Boeing 

Service Bulletin 767–57A0060, Revision 1, 

dated December 31, 1998: Within 500 flight 

hours after August 28, 2001 (the effective 

date of AD 2001–14–19), do a general visual 

inspection of the drain tube assemblies of the 

slat track housings of the wings to find 

discrepancies (loose fittings, cracked tubes, 

fuel leaks), per Part I of the Accomplishment 

Instructions of Boeing Service Bulletin 767– 

57A0060, Revision 1, dated December 31, 

1998; or Revision 2, dated January 31, 2002. 

After the effective date of this AD, only 

Revision 2 may be used. 

(1) If any discrepancies are found, before 

further flight, rework the drain tube assembly 

per Part II of the Accomplishment 

Instructions of Boeing Service Bulletin 767– 

57A0060, Revision 1, dated December 31, 

1998; or Revision 2, dated January 31, 2002. 

After the effective date of this AD, only 

Revision 2 may be used. Repeat the 

inspection at intervals not to exceed 500 

flight hours until accomplishment of the 

requirements in paragraph (h) of this AD. 

(2) If no discrepancies are found, repeat the 

inspection thereafter at intervals not to 

exceed 500 flight hours, until 

accomplishment of the requirements in 

paragraph (h) of this AD. 

Note 1: For the purposes of this AD, a 

general visual inspection is defined as: ‘‘A 

visual examination of an interior or exterior 

area, installation, or assembly to find obvious 

damage, failure, or irregularity. This level of 

inspection is made under normally available 

lighting conditions such as daylight, hangar 

lighting, flashlight, or drop-light and may 

require removal or opening of access panels 

or doors. Stands, ladders, or platforms may 

be required to gain proximity to the area 

being checked.’’ 

Terminating Action for Repetitive 

Inspections 

(h) For airplanes specified in paragraph (g) 

of this AD: Within 6,000 flight hours or 24 

months after August 28, 2001, whichever 

occurs first, replace the drain tube assemblies 

of the slat track housings of the wings 

(including general visual inspection and 

repair) per Part III of the Accomplishment 

Instructions of Boeing Service Bulletin 767– 

57A0060, Revision 1, dated December 31, 

1998; or Revision 2, dated January 31, 2002. 

After the effective date of this AD, only 

Revision 2 may be used. Any applicable 

repair must be accomplished prior to further 

flight. Accomplishment of this paragraph 

terminates the repetitive inspections required 

by paragraph (g) of this AD. 

Rework of Bonding Jumper Assemblies 

(i) For airplanes identified in Boeing 

Service Bulletin 767–57–0068, dated 

September 16, 1999: Within 5,000 flight 

cycles or 22 months after August 28, 2001, 

whichever occurs first, rework the bonding 

jumper assembly of the drain tube assemblies 

of the slat track housing of the wings 

(including general visual inspection and 

repair) per the Accomplishment Instructions 

of Boeing Service Bulletin 767–57–0068, 

dated September 16, 1999; or Revision 1, 

dated May 9, 2002. After the effective date of 

this AD, only Revision 1 may be used. Any 

applicable repair must be accomplished prior 

to further flight. 

New Requirements of This AD 

Drain Tube Replacement 

(j) Within 24 months after the effective date 

of this AD, replace affected drain tube 

assemblies of the number 5 and number 8 

inboard slat track housing, in accordance 

with the Accomplishment Instructions of 

Boeing Service Bulletin 767–57A0094 (for 

Model 767–200, –300, and –300F series 

airplanes) or 767–57A0095 (for Model 767– 

400ER series airplanes), both Revision 2, both 

dated December 17, 2009; except, in Figure 

13 (Sheet 2 of 5) on page 104 and Figure 14 

(Sheet 2 of 5) on page 109 of Boeing Service 

Bulletin 767–57A0094, the view identified as 

‘‘C’’ should be identified as ‘‘A.’’ 

Concurrent Requirements 

(k) For airplanes in Groups 1, 2, and 3, as 

identified in Boeing Service Bulletin 767– 

57A0094, Revision 2, dated December 17, 

2009: The actions specified in paragraphs 

(k)(1), (k)(2), and (k)(3) of this AD, as 

applicable, must be done before or 

concurrently with the requirements of 

paragraph (j) of this AD. 

(1) For Groups 1 and 2: The requirements 

of paragraph (h) of this AD. 

(2) For Group 2 airplanes: Installation of an 

additional electrostatic bond path for the 

number 5 and 8 inboard slat track drain tube 

assemblies, in accordance with Part IV of the 

Accomplishment Instructions of Boeing 

Service Bulletin 767–57A0060, Revision 1, 

dated December 31, 1998; or Revision 2, 

dated January 31, 2002. 

(3) For Group 3 airplanes: The 

requirements of paragraph (i) of this AD. 

(l) For airplanes identified in paragraph (i) 

of this AD, on which the actions required by 

paragraph (i) of this AD were done before the 

effective date of this AD in accordance with 

Boeing Service Bulletin 767–57–0068, dated 

September 16, 1999: Prior to or concurrently 

with the requirements of paragraph (j) of this 

AD, rework the bonding jumper assembly for 

the number 5 and 8 inboard slat track 

housing drain tube installation, in 

accordance with Part 2 of the 

Accomplishment Instructions of Boeing 

Service Bulletin 767–57–0068, Revision 1, 

dated May 9, 2002. 

Credit for Actions Accomplished in 

Accordance With Previous Service 

Information 

(m) Actions done before the effective date 

of this AD in accordance with an applicable 

service bulletin identified in table 1 of this 

AD are acceptable for compliance with the 

corresponding requirements of paragraph (j) 

of this AD. 

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Federal Register / Vol. 76, No. 117 / Friday, June 17, 2011 / Rules and Regulations 35339 

TABLE 1—CREDIT SERVICE BULLETINS

Affected airplanes Service Bulletin Revision level Date 

Model 767–200, –300, and –300F series airplanes Boeing Service Bulletin 767–57A0094 ................... Original ...........

1 ......................

June 2, 2005. 

December 19, 2006. 

Model 767–400ER series airplanes ......................... Boeing Service Bulletin 767–57A0095 ................... Original ...........

1 ......................

June 2, 2005. 

December 19, 2006. 

Alternative Methods of Compliance 

(AMOCs) 

(n)(1) The Manager, Seattle Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or local Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the ACO, send it to the 

attention of the person identified in the 

Related Information section of this AD. 

Information may be e-mailed to 

9-ANM-SeattleACO-AMOC-Requests@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(3) AMOCs approved previously in 

accordance with AD 2001–14–19, 

Amendment 39–12330, are approved as 

AMOCs for the corresponding provisions of 

this AD. 

Related Information 

(o) For information about this AD, contact 

Rebel Nichols, Aerospace Engineer, 

Propulsion Branch, ANM–140S, FAA, Seattle 

Aircraft Certification Office (ACO), 1601 Lind 

Avenue, SW., Renton, Washington 98057– 

3356; phone: 425–917–6509; fax: 425–227– 

6590; e-mail: rebel.nichols@faa.gov. 

Material Incorporated by Reference 

(p) You must use the service information 

contained in Table 2 of this AD, as 

applicable, to do the actions required by this 

AD, unless the AD specifies otherwise. 

TABLE 2—ALL MATERIAL INCORPORATED BY REFERENCE

Document Revision Date 

Boeing Service Bulletin 767–57A0060 ............................................................................................................... 1 .............. December 31, 1998. 

Boeing Service Bulletin 767–57A0060 ............................................................................................................... 2 .............. January 31, 2002. 

Boeing Service Bulletin 767–57–0068 ................................................................................................................ Original .... September 16, 1999. 

Boeing Service Bulletin 767–57–0068 ................................................................................................................ 1 ............... May 9, 2002. 

Boeing Service Bulletin 767–57A0094 ............................................................................................................... 2 .............. December 17, 2009. 

Boeing Service Bulletin 767–57A0095 ............................................................................................................... 2 .............. December 17, 2009. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information contained in Table 3 

of this AD under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

TABLE 3—NEW MATERIAL INCORPORATED BY REFERENCE

Document Revision Date 

Boeing Service Bulletin 767–57A0060 ................................................................................................................. 2 .............. January 31, 2002. 

Boeing Service Bulletin 767–57–0068 .................................................................................................................. 1 ............... May 9, 2002. 

Boeing Service Bulletin 767–57A0094 ................................................................................................................. 2 .............. December 17, 2009. 

Boeing Service Bulletin 767–57A0095 ................................................................................................................. 2 .............. December 17, 2009. 

(2) The Director of the Federal Register 

previously approved the incorporation by 

reference of the service information 

contained in Table 4 of this AD on August 

28, 2001 (66 FR 38350, July 24, 2001). 

TABLE 4—MATERIAL PREVIOUSLY INCORPORATED BY REFERENCE

Document Revision Date 

Boeing Service Bulletin 767–57A0060 ............................................................................................................... 1 .............. December 31, 1998. 

Boeing Service Bulletin 767–57–0068 ................................................................................................................ Original .... September 16, 1999. 

(3) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, Washington 98124–2207; telephone: 

206–544–5000, extension 1; fax: 206–766– 

5680; e-mail: me.boecom@boeing.com; 

Internet: https://www.myboeingfleet.com. 

(4) You may review copies of the 

referenced service information at the FAA, 

Transport Airplane Directorate, 1601 Lind 

Avenue, SW., Renton, Washington. For 

information on the availability of this 

material at the FAA, call 425–227–1221. 

(5) You may also review copies of the 

service information that is incorporated by 

reference at the National Archives and 

Records Administration (NARA). For 

information on the availability of this 

material at an NARA facility, call 202–741– 

6030, or go to http://www.archives.gov/

federal_register/code_of_federal_regulations/

ibr_locations.html. 

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35340 Federal Register / Vol. 76, No. 117 / Friday, June 17, 2011 / Rules and Regulations 

Issued in Renton, Washington, on May 31, 

2011. 

Jeffrey E. Duven, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2011–14337 Filed 6–16–11; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2011–0220; Directorate 

Identifier 2010–NM–259–AD; Amendment 

39–16721; AD 2011–12–14] 

RIN 2120–AA64 

Airworthiness Directives; Fokker 

Services B.V. Model F.28 Mark 0070 

and 0100 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

originated by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as: 

* * * The Federal Aviation Administration 

(FAA) has published Special Federal 

Aviation Regulation (SFAR) 88, and the Joint 

Aviation Authorities (JAA) have published 

Interim Policy INT/POL/25/12. The review, 

conducted by Fokker Services on the Fokker 

100 and Fokker 70 type design in response 

to these regulations, revealed that the fuel 

sense line from the overflow valves may 

touch the adjacent fuel-quantity indicationprobe. Under certain conditions, this may 

result in an ignition source in the wing tank 

vapour space. 

This condition, if not detected and 

corrected, could result in a wing fuel tank 

explosion and consequent loss of the 

aeroplane. 

* * * * * 

We are issuing this AD to require 

actions to correct the unsafe condition 

on these products. 

DATES: This AD becomes effective July 

22, 2011. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of July 22, 2011. 

ADDRESSES: You may examine the AD 

docket on the Internet at http:// 

www.regulations.gov or in person at the 

U.S. Department of Transportation, 

Docket Operations, M–30, West 

Building Ground Floor, Room W12–140, 

1200 New Jersey Avenue, SE., 

Washington, DC. 

FOR FURTHER INFORMATION CONTACT: Tom 

Rodriguez, Aerospace Engineer, 

International Branch, ANM–116, 

Transport Airplane Directorate, FAA, 

1601 Lind Avenue, SW., Renton, 

Washington 98057–3356; telephone 

(425) 227–1137; fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Discussion 

We issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to include an AD that would 

apply to the specified products. That 

NPRM was published in the Federal 

Register on March 15, 2011 (76 FR 

13921). That NPRM proposed to correct 

an unsafe condition for the specified 

products. The MCAI states: 

* * * The Federal Aviation Administration 

(FAA) has published Special Federal 

Aviation Regulation (SFAR) 88, and the Joint 

Aviation Authorities (JAA) have published 

Interim Policy INT/POL/25/12. The review, 

conducted by Fokker Services on the Fokker 

100 and Fokker 70 type design in response 

to these regulations, revealed that the fuel 

sense line from the overflow valves may 

touch the adjacent fuel-quantity indicationprobe. Under certain conditions, this may 

result in an ignition source in the wing tank 

vapour space. 

This condition, if not detected and 

corrected, could result in a wing fuel tank 

explosion and consequent loss of the 

aeroplane. 

For the reasons described above, this AD 

requires a one-time [general visual] 

inspection to check the route and clamping 

of the sense line hose and wiring conduit 

hose to each wing tank overflow valve and, 

depending on the findings, the necessary 

corrective actions. 

Corrective actions include installing two 

brackets next to the overflow valve on 

the main tank access panel, making a 

modification to the routing of the hose 

for the sense line, and installing clamps 

to keep the hoses in position. Required 

actions also include revising the 

maintenance program to include a 

Critical Design Configuration Control 

Limitation (CDCCL). You may obtain 

further information by examining the 

MCAI in the AD docket. 

Comments 

We gave the public the opportunity to 

participate in developing this AD. We 

received no comments on the NPRM or 

on the determination of the cost to the 

public. 

Conclusion 

We reviewed the available data and 

determined that air safety and the 

public interest require adopting the AD 

as proposed. 

Differences Between This AD and the 

MCAI or Service Information 

We have reviewed the MCAI and 

related service information and, in 

general, agree with their substance. But 

we might have found it necessary to use 

different words from those in the MCAI 

to ensure the AD is clear for U.S. 

operators and is enforceable. In making 

these changes, we do not intend to differ 

substantively from the information 

provided in the MCAI and related 

service information. 

We might also have required different 

actions in this AD from those in the 

MCAI in order to follow our FAA 

policies. Any such differences are 

highlighted in a NOTE within the AD. 

Costs of Compliance 

We estimate that this AD will affect 6 

products of U.S. registry. We also 

estimate that it will take about 2 workhours per product to comply with the 

basic requirements of this AD. The 

average labor rate is $85 per work-hour. 

Based on these figures, we estimate the 

cost of this AD to the U.S. operators to 

be $1,020, or $170 per product. 

In addition, we estimate that any 

necessary follow-on actions would take 

about 4 work-hours and require parts 

costing $800, for a cost of $1,140 per 

product. We have no way of 

determining the number of products 

that may need these actions. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. ‘‘Subtitle VII: 

Aviation Programs,’’ describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in ‘‘Subtitle VII, 

Part A, Subpart III, Section 44701: 

General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We determined that this AD will not 

have federalism implications under 

Executive Order 13132. This AD will 

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