Federal Register / Vol. 77, No. 209 / Monday, October 29, 2012 / Proposed Rules 65501 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1110; Directorate 

Identifier 2012–NM–013–AD] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to supersede an 

existing airworthiness directive (AD) 

that applies to certain The Boeing 

Company Model 707 airplanes, and 

Model 720 and 720B series airplanes. 

The existing AD currently requires 

replacing wiring for the fuel boost 

pumps and override pumps with new 

wiring, installing Teflon sleeving on the 

wiring, and doing associated actions; 

and doing repetitive inspections to 

detect damage of the wiring or evidence 

of a fuel leak. Since we issued that AD, 

we have determined through service 

experience that the inspection interval 

was too long. This proposed AD would 

reduce the repetitive inspection 

interval. We are proposing this AD to 

detect and correct damaged wiring for 

the fuel boost pumps and override 

pumps, which could cause electrical 

arcing that could puncture the conduit 

containing the wire, and result in a fuel 

tank explosion or a fire adjacent to the 

fuel tank. 

DATES: We must receive comments on 

this proposed AD by December 13, 

2012. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, Attention: Data 

& Services Management, P.O. Box 3707, 

MC 2H–65, Seattle, WA 98124–2207; 

telephone 206–544–5000, extension 1; 

fax 206–766–5680; 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, WA. 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 proposed AD, the 

regulatory evaluation, any comments 

received, and other information. The 

street address for the Docket Office 

(phone: 800–647–5527) is in the 

ADDRESSES section. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Rebel Nichols, Aerospace Engineer, 

Propulsion Branch, ANM–140S, Seattle 

Aircraft Certification Office (ACO), 

FAA, 1601 Lind Avenue SW., Renton, 

WA 98057–3356; phone 425–917–6509; 

fax 425–917–6590; email: Rebel.

Nichols@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to send any written 

relevant data, views, or arguments about 

this proposed AD. Send your comments 

to an address listed under the 

ADDRESSES section. Include ‘‘Docket No. 

FAA–2012–1110; Directorate Identifier 

2012–NM–013–AD’’ at the beginning of 

your comments. We specifically invite 

comments on the overall regulatory, 

economic, environmental, and energy 

aspects of this proposed AD. We will 

consider all comments received by the 

closing date and may amend this 

proposed AD because of those 

comments. 

We will post all comments we 

receive, without change, to http://www.

regulations.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact we receive 

about this proposed AD. 

Discussion 

On August 17, 2001, we issued AD 

2001–17–20, Amendment 39–12411 (66 

FR 44954, August 27, 2001), for certain 

Model 707 airplanes, and Model 720 

and 720B series airplanes. That AD 

requires replacing the wiring for the fuel 

boost pumps and override pumps with 

new wiring, installing Teflon sleeving 

on the wiring, and doing associated 

actions; and doing repetitive inspections 

to detect damage of the wiring or 

evidence of a fuel leak. That AD 

resulted from a report that, while 

investigating a fuel leak around the bolts 

on the number 1 fuel boost pump, an 

operator found wire damage where the 

fuel boost pump wiring exited the boost 

pump and entered the boost pump 

access area. We issued that AD to detect 

and correct damaged wiring for the fuel 

boost pumps and override pumps, 

which could cause electrical arcing that 

could puncture the conduit containing 

the wire, and result in a fuel tank 

explosion or a fire adjacent to the fuel 

tank. 

Actions Since Existing AD, Amendment 

39–12411 (66 FR 44954, August 27, 

2001) Was Issued 

Since we issued AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, 

August 27, 2001), we have determined 

through service experience that the 

inspection interval was too long. 

FAA’s Determination 

We are proposing this AD because we 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop in other products of the same 

type design. 

Proposed AD Requirements 

This proposed AD would retain all 

requirements of AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, 

August 27, 2001). This proposed AD 

would reduce the repetitive inspection 

interval from 30,000 flight hours to 

15,000 flight hours. This change has 

been coordinated with the 

manufacturer. 

Change to Existing AD, Amendment 39– 

12411 (66 FR 44954, August 27, 2001) 

This proposed AD would retain all 

the requirements of AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, 

August 27, 2001). Since AD 2001–17–20 

was issued, the AD format has been 

revised, and certain paragraphs have 

been rearranged. As a result, the 

corresponding paragraph identifiers 

have changed in this proposed AD, as 

listed in the following table: 

REVISED PARAGRAPH IDENTIFIERS

Requirement in AD 

2001–17–20, 

Amendment 39-12411 

(66 FR 44954, August 

27, 2001) 

Corresponding 

requirement in this 

proposed AD 

paragraph (a) paragraph (g) 

Note 2 paragraph (g)(1) 

Note 3 paragraph (g)(2) 

paragraph (b) paragraph (h) 


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65502 Federal Register / Vol. 77, No. 209 / Monday, October 29, 2012 / Proposed Rules 

Costs of Compliance 

We estimate that this proposed AD 

affects 5 airplanes of U.S. registry. 

We estimate the following costs to 

comply with this proposed AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per product Cost on U.S. operators 

Replacement [retained actions 

from AD 2001-17-20, 

Amendment 39-12411 (66 

FR 44954, August 27, 

2001)].

38 work-hours × $85 per hour 

= $3,230.

$9,943 $13,173 .................................. $65,865 

Inspection [retained actions 

from AD 2001-17-20, 

Amendment 39-12411 (66 

FR 44954, August 27, 

2001)].

3 work-hours × $85 per hour 

= $255 per inspection 

cycle..

$0 $255 per inspection cycle ...... $1,275 per inspection cycle. 

The new requirements of this 

proposed AD add no additional 

economic burden. The increase in 

replacement labor costs of 31 work 

hours in AD 2001–17–20, Amendment 

39–12411 (66 FR 44954, August 27, 

2001), to the 38 work hours specified in 

this proposed AD, is due to the opening 

and closing hours being included in the 

cost of this proposed AD. We have 

received no definitive data that would 

enable us to provide cost estimates for 

the on-condition actions specified in 

this proposed AD. 

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 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would 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 the proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

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

the 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. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 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. 

§ 39.13 [Amended] 

2. The FAA amends § 39.13 by 

removing airworthiness directive (AD) 

2001–17–20, Amendment 39–12411 (66 

FR 44954, August 27, 2001), and adding 

the following new AD: 

The Boeing Company: Docket No. FAA– 

2012–1110; Directorate Identifier 2012– 

NM–013–AD. 

(a) Comments Due Date 

The FAA must receive comments on this 

AD action by December 13, 2012. 

(b) Affected ADs 

This AD supersedes AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, August 

27, 2001). 

(c) Applicability 

This AD applies to The Boeing Company 

Model 707–100 long body, –200, –100B long 

body, and –100B short body series airplanes; 

Model 707–300, –300B, –300C, and –400 

series airplanes; and Model 720 and 720B 

series airplanes; certificated in any category; 

line numbers 1 through 941 inclusive. 

(d) Subject 

Joint Aircraft System Component (JASC)/ 

Air Transport Association (ATA) of America 

Code 24, Electrical Power. 

(e) Unsafe Condition 

This AD was prompted by a report that, 

while investigating a fuel leak around the 

bolts on the number 1 fuel boost pump on 

a Boeing Model 707 series airplane, an 

operator found wire damage where the fuel 

boost pump wiring exited the boost pump 

and entered the boost pump access area. 

Since we issued AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, August 

27, 2001) to address the unsafe condition, we 

have determined through service experience 

that the inspection interval was too long. We 

are issuing this AD to detect and correct 

damaged wiring for the fuel boost pumps and 

override pumps, which could cause electrical 

arcing that could puncture the conduit 

containing the wire, and result in a fuel tank 

explosion or a fire adjacent to the fuel tank. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Replacement of Wiring, 

Installation of Sleeving, and Associated 

Actions 

This paragraph restates the requirements of 

paragraph (a) of AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, August 

27, 2001). Within 1 year or 4,000 flight hours 

after October 1, 2001 (the effective date of AD 

2001–17–20), whichever occurs first: Replace 

the wiring for the fuel boost pumps and 

override pumps, install Teflon sleeving over 


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Federal Register / Vol. 77, No. 209 / Monday, October 29, 2012 / Proposed Rules 65503 

the wiring, and do all associated actions, per 

the Accomplishment Instructions of Boeing 

Service Bulletin A3500, Revision 1, dated 

April 26, 2001. The associated actions 

include performing a general visual 

inspection of the area around each fuel boost 

pump and override pump for evidence of a 

fuel leak; finding the source of any fuel leak 

and repairing the affected area; replacing the 

conduit, if required; and performing a 

detailed visual inspection of the wiring 

installed in the conduit for evidence of 

electrical arcing or a fuel leak, or exposed 

copper wire. If replacement of the conduit is 

deferred per the Accomplishment 

Instructions of Boeing Service Bulletin 

A3500, Revision 1, dated April 26, 2001, 

repeat the inspection for fuel leaks every 500 

flight hours until the conduit is replaced, and 

replace the conduit within 6,000 flight hours 

or 18 months, whichever occurs first. 

(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 detect 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.’’ 

(2) For the purposes of this AD, a detailed 

visual inspection is defined as: ‘‘An intensive 

visual examination of a specific structural 

area, system, installation, or assembly to 

detect damage, failure, or irregularity. 

Available lighting is normally supplemented 

with a direct source of good lighting at 

intensity deemed appropriate by the 

inspector. Inspection aids such as mirror, 

magnifying lenses, etc., may be used. Surface 

cleaning and elaborate access procedures 

may be required.’’ 

(h) Retained Repetitive Inspections 

This paragraph restates the requirements of 

paragraph (b) of AD 2001–17–20, 

Amendment 39–12411 (66 FR 44954, August 

27, 2001), with a new compliance time. After 

replacement of the wiring per paragraph (g) 

of this AD, repeat the detailed visual 

inspection of the wiring for the fuel boost 

pumps and override pumps for damage, such 

as evidence of electrical arcing or exposed 

copper wire, or evidence of a fuel leak. After 

the effective date of this AD, repeat the 

inspection one time at the earlier of the times 

specified in paragraphs (h)(1) and (h)(2) of 

this AD, per the Accomplishment 

Instructions of Boeing Service Bulletin 

A3500, Revision 1, dated April 26, 2001. If 

any electrical arcing or exposed copper wire 

or evidence of a fuel leak is detected during 

any inspection per this paragraph, before 

further flight, do the applicable corrective 

actions (including finding the source of any 

fuel leak and repairing the affected area, 

replacing the wiring, replacing the conduit, 

or installing new Teflon sleeving; as 

applicable) according to the Accomplishment 

Instructions of Boeing Service Bulletin 

A3500, Revision 1, dated April 26, 2001. 

Repeat the inspection thereafter at intervals 

not to exceed 15,000 flight hours. 

(1) Within 30,000 flight hours after the 

most recent inspection. 

(2) At the later of the compliance times 

specified in paragraphs (h)(2)(i) and (h)(2)(ii) 

of this AD. 

(i) Within 15,000 flight hours after the most 

recent inspection. 

(ii) Within 3 years after the effective date 

of this AD. 

(i) Credit for Previous Actions 

This paragraph provides credit for the 

actions required by paragraph (g) of this AD, 

if those actions were performed before 

October 1, 2001 (the effective date of AD 

2001–17–20, Amendment 39–12411 (66 FR 

44954, August 27, 2001)), using Boeing Alert 

Service Bulletin A3500, dated July 27, 2000, 

which is not incorporated by reference in this 

AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, Seattle 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 emailed to: 9-ANMSeattle-ACO-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 2001–17–20, 

Amendment 39–12411 (66 FR 44954, August 

27, 2001), are approved as AMOCs for this 

AD, except for AMOCS that change the 

inspection frequency. 

(k) Related Information 

(1) For more information about this AD, 

contact Rebel Nichols, Aerospace Engineer, 

Propulsion Branch, ANM–140S, Seattle 

Aircraft Certification Office (ACO), FAA, 

1601 Lind Avenue SW., Renton, WA 98057– 

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

6590; email: Rebel.Nichols@faa.gov. 

(2) For service information identified in 

this AD, contact Boeing Commercial 

Airplanes, Attention: Data & Services 

Management, P.O. Box 3707, MC 2H–65, 

Seattle, WA 98124–2207; telephone 206– 

544–5000, extension 1; fax 206–766–5680; 

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, 

WA. For information on the availability of 

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

Issued in Renton, Washington, on October 

22, 2012. 

Kalene C. Yanamura, 

Acting Manager, Transport Airplane 

Directorate, Aircraft Certification Service. 

[FR Doc. 2012–26480 Filed 10–26–12; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2012–1148; Directorate 

Identifier 2012–CE–039–AD] 

RIN 2120–AA64 

Airworthiness Directives; Diamond 

Aircraft Industries GmbH Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: We propose to adopt a new 

airworthiness directive (AD) for 

Diamond Aircraft Industries GmbH 

Models DA 42, DA 42 M–NG, and DA 

42 NG airplanes. This proposed 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 overextension of the main 

landing gear (MLG) shock absorber that 

could lead to the MLG jamming in the 

gear bay and result in damage to the 

aircraft or occupant injury. We are 

issuing this proposed AD to require 

actions to address the unsafe condition 

on these products. 

DATES: We must receive comments on 

this proposed AD by December 13, 

2012. 

ADDRESSES: You may send comments by 

any of the following methods: 

• Federal eRulemaking Portal: Go to 

http://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590. 

• Hand Delivery: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE., 

Washington, DC 20590, between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. 

For service information identified in 

this proposed AD, contact Diamond 

Aircraft Industries GmbH, N.A. OttoStra+e 5, A–2700 Wiener Neustadt, 

Austria, telephone: +43 2622 26700; fax: 

+43 2622 26780; email: 

office@diamond-air.at; Internet: http:// 

www.diamond-air.at. You may review 

copies of the referenced service 

information at the FAA, Small Airplane 


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