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DEPARTMENT OF TRA."ISPORTA nON Federal Aviation Administration 14CFR Part 39 

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# 1?Jj,o "OuTING YMBOL Airworthiness Directives; The Boeing Company Model 767 Series Airplanes

ACTION: Notice ofproposed rulemaking (NPRM). (DOT). AGENCY: Federal Aviation Administration (FAA), Depmtment ofTransportation 

# n: ovnNG SYMBOL SEA-Itt&' NffiALSlSIG 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 ofthe wiring and surrounding Teflon sleeves ofthe fuel tank boost pumps and override/jettison pumps~replacement ofthe sleeves with new sleeves, for certain airplanes; and repair or replacement oftile 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 

# C~ information indicating that the repetitive inspection interval inthe existing AD istoo 10 TE ,j 

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### os-- (0 because chafing ofthe sleeving continues to occur much earlier than expected between scheduled inspections. We are proposing this AD to detect and correct chafing ofthe fu pump wire insulation and consequent exposure ofthe electrical conductor, which could result inelectrical arcing between the wires and conduit and consequent fire orexplosio ofthe fuel tanle DATES: We must receive comments on this proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF-PUBLICATION INTHE FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:

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

DEPARTMENT OF TRANSPORT AnON Federal Aviation Administration 14CFR Part 39 [Docket No. FAA-2010-++++; Directorate Identifier 20IO-NM-148-AD) RlN 2120-AA64 ~Om:URRENCES ROvnNG SYMBOL tfl.!m-

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# t: IzJfro OUTING sYHBOIinspections to detect discrepancies ofthe wiring and surrounding Teflon sleeves ofthe Ainvorthiness Directives; The Boeing Company Model 767 Series Airplanes AGENCY: Federal Aviation Administration (FAA), Department ofTransportation 

### (DOT). ACTION: Notice ofproposed rulemaking (NPRM). INiTIA I lG SUMMARY: The FAA proposes to supersede anexisting airworthiness directive (AD) that applies to all Model 767 airplanes. The existing AD currently requires repetitive 

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# ..s,.-""S fuel tank boost pumps and override/jettison pumps; replacement ofthe sleeves with new Ilm.o.t.S{SlG sleeves, for certain airplanes; and repair orreplacement ofthe 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 istoo 10 because chafmg ofthe sleeving continues to occur much earlier than expected between scheduled inspections. We areproposing this AD to detect and correct chafing ofthe fu pump wire insulation and consequent exposure ofthe electrical conductor, which could result inelectrical arcing between the wires and conduit and consequent fire orexplosio ofthe fuel tank. DATES: We must receive comments on this proposed AD by [INSERT DATE 45 , 

### DAYS AFTER DATE OF PUBLICATION INTHE FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the !l'" OVTING SYMBOt. ll1ALSlSIG .n

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