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[4910-13-P]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

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flex-hoses of the fligbtcrew and supernumerary oxygen system installed under the

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oxygen mask stowage box at a flightcrew and supernumerary oxygen mask location, ant ,N~);....-......--

replacing with a new non-conductive low-pressure flex-hose of the oxygen system if AlE

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necessary. This AD results from reports of a low-pressure flex-hose of a flightcrew

oxygen system that burned through due to inadvertent electrical current from a short

circuit in an adjacent audio select panel. We are issuing this AD to prevent inadvertent

electrical current, which can cause the low-pressure flex-hose of a flightcrew or

airplanes. This AD requires inspecting to verify the part number of the low-pressure

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

Airworthiness Directives; The Boeing Company Model 757 Airplanes

SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model?

[Docket No. FAA-2009-0795; Directorate Identifier 2009-NM-083-AD; Amendmen'

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RIN 2120-AA64

14 CFR Part 39

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supernumerary oxygen system to melt or burn, resulting in oxygen system leakage and

smoke or fire.

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF

PUBLICATION IN THE FEDERAL REGISTER].

,

The Director of the Federal Register approved the incorporation by reference of ~ ATE

certain publications listed in the AD as of [INSERT DATE 35 DAYS AFTER DATE oj

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PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: For service information identified in this AD, contact Boeing
14910-13-PI

DEPARTMENT OF TRANSPORT ATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2009-0795; Directorate Identifier 2009-NM-083-AD; Amcndmen

_39·**; AD **1

RIN 2120-AA64

Airworthiness Directives; The Boeing Company Model 757 Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model 7

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airplanes. This AD requires inspectffig to verify the part number of the low-pressure

flex-hoses of the flightcrew and supernumerary oxygen system installed under the

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oxygen mask stowage box at a flightcrew and supernumerary oxygen mask location, an "nw.s.'SIG

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replacmg with a new non-conductive low-pressure flex-hose of the oxygen system if

necessary. This AD results from reports of a low-pressure flex-hose of a flightcrew

oxygen system that burned through due to inadvertent electrical current from a short

circuit in an adjacent audio select paneL We arc issuing this AD to prevent inadvertent

electrical current which can cause the low-pressure flex-hose ofa flightcrew or

supernumerary oxygen system to melt or bum, resulting in oxygen system leakage and

smoke or fire.

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF

PUBLICATION IN THE FEDERAL REGISTER].

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The Director of the Federal Register approved the incorporation by reference of

certain publications listed in the AD as of [INSERT DATE 35 DAYS AFTER DATE 0 -

PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: For service infonnation identified in this AD, contact Boeing

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