[4910-13-PJ

DEPARTMENT OF TR<\J'ISPORTA nON

Federal Aviation Administration

14 CFR Part 39

Airworthiness Directives; The Boeing Company Model 737-300, -400, -500, -600,

[Docket No. FAA-2010-0046j Directorate Identifier 2009-NM-086-AD; Amendmen '0Y03 I o~·om,~,

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737-300, -400, -500, -600, -700, and -800 series airplanes. This AD requires inspecting 0

verify the part number of the low-pressure flex-hoses of the crew oxygen system install

under the oxygen mask stowage boxes located within the flight deck, and replacing the

-700, and -800 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final mle.

SUMlVV\.RY: We are adopting a new airwortHiness directive (AD) for certain Model

flex-hose with a new non-conductive low-pressure flex-hose if necessary. This AD

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

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certain publications listed in the AD as of[I:NS'ERT DATE 35 DAYS AFTER DATE 0

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PUBLICATlON IN THE FEDERAL REGISTER].

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results from reports of low-pressure flex-hosesl of the crew oxygen system that burned

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through due to inadvertent electrical current fr01l1a short circuit in the audio select pane.

We are issuing this AD to prevent inadvertent llectTical current, which can cause the ,~LTIAI£'SJG

low-pressure flex-hoses ofthe crew oxygen syltem to melt or bum, causing oxygen

PUBLICATION IN THE FEDERAL REG1STER].

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

system leakage and smoke or fire.
[491O-13-P]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

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[Docket No. FAA-2010-0046j Directorate Identifier 2009-NM-086-ADj Amendment D

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39-**; AD **)

RlN 2120-AA64

Ainvorthiness Directives; The Boeing Company Model 737-300, ·400, -500, -600,

-700, and -800 Series Airplanes

AGENCY: Federal Aviation Administration (Fr)' DOT.

ACTION: Final rule.

SU.MMARY: We are adopting a new airworthiness directive (AD) for certain Model

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DATES: This AD is effective [INSERT DATE "5 DAYS AFTER DATE OF

737-300, -400, -500, -600, -700, and -800 series airplanes. This AD requires inspecting t

verify the part number of the low-pressure flexMhoses of the crew oxygen system installe

under the oxygen mask stowage boxes located 1ithin the flight deck, and replacing the m

flex-hose with a new nOll-conductive low-pressure flex-hose if necessary. This AD (p I j <J I I O~'C ~"eoc .

results from reports oflow-pressure flex-hoses of the crew oxygen system that burned .AjJ Nl- r~

through due to inadvertent electrical current frorl a short circuit in the audio select panel' lS'A> ~

l-IO-IO We are issuing this AD to prevent inadvertent ete~trical current, which can cause the

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low-pressure flex-hoses of the crew oxygen sys ill to melt or burn, causing oxygen ,~!'Iv.t'l-l):?

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system leakage and smoke or fire. - -7)' '-P

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PUBLICATION IN THE FEDERAL REGISTlfl "",:,2

The Director of the Federal Register app~oved the inc9rporation by reference of (. ~

I '="""=1 ~ certain publications listed in the AD as of [INSERT DATE 35 DAYS AFTER DATE 0 I vl/"J

PUBLICATION IN THE FEDERAL REGISTll ]. O'mNG sYMBOL

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[4910-13-PJ

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration ONCURREtlCE$

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14 CFR Part 39

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[Docket No. FAA-2010-0046; Directorate Identitier 2009-NM-086-AD; Amendmen~ D Ru" fl-;(

DATE 39-**; AD HI

RlN 2120-AA64

Airworthiness Directives; The Boeing CompJy Model 737-300, -400, -500, -600,

-700, and -800 Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

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ACTION: Final rule.

SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model OAn: ;"

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737-300, -400, -500, -600, -700, and -800 series airplanes. This AD requires inspecting t .0"" gS bu'

verify the part lllUllber of the low-pressure flex-Joses of the crew oxygen system installe

under the oxygen mask stowage hoxes located 1ithin the flight deck. and replacing the Me

flex-hose wIth a new non-conductIve Jow-pressle flex-hose It necessary. Thjs AD OlfTl;N~IS'r~B:L_(

results from reports of low-pressure flex-hoses of the crew oxygen system that burned A ,\..At J~.)

I v')'.:r,L through due to inadvertent electrical CUffent from a short circuit in the audio select panel -I-- t- -"'--

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"'" IC-" , We it !0 are issuing this AD to prevent inadvertent electrical current, which can cause the

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low-pressure flex-hoses of the crew oxygen Syst1m to melt or burn, causing oxygen

system leakage and smoke or fire.

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

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PUBLICATION IN THE FEDERAL REGISTEilThe Director of the Federal Register approI ved the inc9rporation by reference of rillALSi51G

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::::I~:;I~:O: ~: ~:::::s:~:;:tT DATE 35 DA YS AFTER DATE 0 O~"C,,"eo,