14910-13-PI

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

RIN 2120-AA64

Airworthiness Directives; The Boeing Company Model 747- tOO,747-1 OOB,

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14 CFR Part 39 ~lE

(Docket No. FAA-2010-004S; Directorate Identifier 2009-NM-085-AD; Amendmen '/(1//1'0 \b3~l. W~,~""W,

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747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, "

747-400F, 747SR, and 747SP Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

airplanes. This AD requires inspecting lo verify the part number orthe low-pressure

flex-hoses of the crew oxygen system installed under the oxygen mask stowage boxes il

the flight deck, and replacing the flex-hose with a new non-conductive low-pressure

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

The Director of the Federal Register approved the incorporation by reference 0

PUBLICATION IN THE FEDERAL REGISTER].

or bum, causing oxygen system leakage and smoke or fire.

PUBLICATION IN THE FEDERAL REGISTER].

current, which can cause the low-pressure flex-hoses ofIhe crew oxygen system to me

crew oxygen system that burned through due tOIinadvertent electrical current from ash

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circuit in the audio select panel. We are issuing this AD to prevent inadvertent electrica

flex-hose ifnecessary. This AD results from re~orts of low-pressure flex-hoses of the

DATES: This AD is effcctive [INSERT DATE 35 DAYS AFTER DATE OF
[491O-13-P]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39 A1.l~'~IL\

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rDocket No. FAA-2010-0045j Directorate Identifier 2009-NM-085-ADj Amendmen D;' _ /

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flex-hose if necessary. This AD results from reports aflaw-pressure flex-hoses of the

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crew oxygen system that burned through due to inadvertent electrical current from a sho D ;;C '--r"V

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circuit in the audio select paneL We are issuing th.is AD to prevent inadvertent electrical ';1 YII 0

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current, which can cause the low-pressure flex-noses of the crew oxygen system to melt N\J', ~t--~ '

the flight deck, and replacing the flex-hose with a new non~conductive low-pressure

747-400F, 747SR, and 747SP Series Airplanes

Ainvorthiness Directives; The Boeing Company ModeI747~IOO, 747-100B,

747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D,

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMJ\1ARY: We are adopting a new airworthiness directive (AD) for certain Model 7

airplanes. This AD requires inspecting to verify the part number of the low-pressure ~ f:!!J!SIr:.-

flex-hoses of the crew oxygen system installed under the oxygen mask stowage boxes i

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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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PUBLICA nON IN THE FEDERAL REGISTER].

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

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certain publication listed in the AD as of [INSERT DATE 35 DAYS AFTER DATE OF m

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PUBLICA nON IN THE FEDERAL REGISTER].

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(4910-13-Pj

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

(Docket No. FAA-2010-0045j Directorate Identifier 2009-NM-085-AD; Amendmen

39-**; AD **)

RlN 2120-AA64

Ainvorthincss Directives; The Boeing Company Model 747-100, 747-1 DaB,

747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D,

747-400F, 747SR, and 747SP Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

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

flex-hoses of the crew oxygen system installed under the oxygen mask stowage boxes i

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the flight deck, and replacing the flex-hose with a new non-conductive low-pressure

flex-hose if necessary. This AD results from reports of Jaw-pressure flex-hoses of the

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crew oxygen system that burned through due to inadvertent electrical current from a sho -) I.~ -p~ "'c/ ./

circuit in the audio select panel. We are issuing this AD to prevent inadvertent electrical/I "/ I 0

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or bum, causing 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

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certain publication listed in the AD as o([INSERT DATE 35 DAYS AFTER DATE 0 '"

PUBLICATION IN THE FEDERAL REGISTER].

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