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DEPARTMENT OF TRA."ISPORTA nON

Federal Aviation Administration

14 CFR Part 39 II (,.,0

[Docket No_ FAA-201O-~ Directorate Identifier 2010-NM-148-AD)

RIN 2120-AA64

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Airworthiness Directives; The Boeing Company Model 767 Series Airplanes

ACTION: Notice of proposed rulemaking (NPRM).

(DOT).

AGENCY: Federal Aviation Administration (FAA), Depmtment of Transportation

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SUMMARY: The FAA proposes to supersede an existing airworthiness directive (AD)

that applies to all Model 767 airplanes. The existing AD currently requires repetitive

inspections to detect discrepancies of the wiring and surrounding Teflon sleeves of the

fuel tank boost pumps and override/jettison pumps~ replacement of the sleeves with new

sleeves, for certain airplanes; and repair or replacement of tile wiring and sleeves with q/2.7 tD

new parts, as necessary. This proposed AD would reduce the initial compliance time an OlI1lNGSYMIlOl. .:..-1

repetitive inspection interval in the existing AD. This proposed AD results from fleet IINmAi.SIS1G

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information indicating that the repetitive inspection interval in the existing AD is too 10 TE ,j !

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because chafing of the sleeving continues to occur much earlier than expected between

scheduled inspections. We are proposing this AD to detect and correct chafing of the fu

pump wire insulation and consequent exposure of the electrical conductor, which could

result in electrical arcing between the wires and conduit and consequent fire or explosio

of the fuel tanle

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DA YS AFTER DATE OF-PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods:

• Federal eRulemaking Portal: Go to http://\.\i\Nw.regulations.gov. Follow the
[4910-13-P]

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-++++; Directorate Identifier 20IO-NM-148-AD)

RlN 2120-AA64

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OUTING sYHBOIinspections to detect discrepancies of the wiring and surrounding Teflon sleeves of the

Ainvorthiness Directives; The Boeing Company Model 767 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of Transportation

(DOT).

ACTION: Notice of proposed rulemaking (NPRM).

INiTIA I lG

SUMMARY: The FAA proposes to supersede an existing airworthiness directive (AD)

that applies to all Model 767 airplanes. The existing AD currently requires repetitive

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fuel tank boost pumps and override/jettison pumps; replacement of the sleeves with new Ilm.o.t.S{SlG

sleeves, for certain airplanes; and repair or replacement of the wiring and sleeves with

new parts, as necessary. TIlls proposed AD would reduce the initial compliance time an

repetitive inspection interval in the existing AD. This proposed AD results from fleet

information indicating that the repetitive inspection interval in the existing AD is too 10

because chafmg of the sleeving continues to occur much earlier than expected between

scheduled inspections. We are proposing this AD to detect and correct chafing of the fu

pump wire insulation and consequent exposure of the electrical conductor, which could

result in electrical arcing between the wires and conduit and consequent fire or explosio

of the fuel tank.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

,

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods:

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the

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