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proposed AD would require a general visual inspection for affected serial numbers ofth F'O<JT'NGSy"eo<..

737-700, -700C, -800, -900ER, 747-400F, and 767-200 and -300 series airplanes. This

747-400F, and 767-200 and -300 Series Airplanes

Ainvorthiness Directives; The Boeing Company Model 737-700, -700e, -800, -90GE

Federal Aviation Administration

[4910-13-Pj

RlN 2120-AA64

DEPARTMENT OF TRANSPORTATION

14 CFR Part 39 1042

[Docket No. FAA-2010-++++; Directorate Identifier lOlO-NM-094-ADJ

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain

crew oxygen mask stowage box units, and corrective actions if necessary. This propose

AD results from reports that certain crew oxygen mask stowage box units were possibly

delivered with a burr in the inlet fitting. The burr may break loose during test or operatio

and may pose an ignition source or cause an inlet valve to jam. We are proposing this A

to prevent an ignition source, which could result in an oxygen-fed fire, or a jammed inle

valve in an oxygen mask stowage box unit, which could result in restricted flow of

oxygen.

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

instructions for submitting comments .

• Fax: 202-493-2251.

FAA Form 1360-14.1 (5-89) OFFICIAL FILE COpy

• U .S_GPO; 1 ggo-()- nS·01 21201 0 I
1491O-I3-Pj

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administ.-ation ~O"C""RRE~CES

OU,ING S'MBOl

14 CFR Part 39

[Docket No. FAA-2010-++++j Directorate Identifier 2010-NM-O.94-ADI

RIN 2120-AA64 '"

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ACTION: Notice of proposed rulemaking (NPRM)_ eounNG SYMBOL

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain ~ I\',- "Lo J~

737-700, -70De, -800, -90GER, 747-400F, and 767-200 and -300 series airplanes. This OAr,}

-1P"11°

proposed AD would require a general visual inspection for affected serial numbers o1'th k""MgSy"'"'"

crew oxygen mask stowage box units, and colTective actions if necessary. This proposed r~rLREG

AD results from reports that certain crew oxygen mask stowage box units were possibly Me_ . ~r.r \), 0&

delivered with a burr in the inlet fitting. The burr may break loose during test or operatio (JJ:JlAV'-/-

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to prevent an ignition source, which could result in an oxygen~fed flIe, or ajammed inle

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ffi)rrd[XD

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

valve in an oxygen mask stowage box unit, which. could result in restricted tlow of

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

oxygen.

and may pose an ignition source or cause an inlet valve to jam. We are proposing this A

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

• Federal eRulemaking Portal: Go to http://w"V.tvv.regulations.gov. Follow the

,

instructions for submitting comments .

lNITIALS;SlG

• Fax: 202-493-2251.

INmAI-5/SIG

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[491O-13-P]

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration ~ONCURIU'~CES

O\Jl1NG SVMBOL

)4 CFR Part 39

(Docket No. FAA-2010-++++; Directorate Identifier 2010-NM·094-AD]

RIN 2J20-AA64

1-19-10

Ainvorthincss Directives; The Boeing Company Model 737-700, -700e, -800, -900ER OUTIHGsYHOOl

flljlY)

747-400F, and 767-200 and -300 Series Airplanes

AGENCY: Federal Aviation Administration (FAA),IOt;~~-,..{

ACTION: Notice of proposed rulemaking (NPRM).

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DunN{; SYMBOL

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain -. [N lA,S .I~~

737-700, -700C, -800, -900ER, 747-400F, and 767-200 and -300 series airplanes. This "f' J

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proposed AD would require a general visual inspection for affected serial numbers of th _'''II S•••_

AD results from reports that certain crew oxygen mask stowage box units were possibly An .

de;ivered with a burr in the inlet fitting. The burr may break loose during test or operatio 1/18!o OIJTING S'<M801.

and may pose an ignition source or cause an inlet valve to jam. We are proposing this A

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crew oxygen mask stowage box units, and corrective actions if necessary. This proposed ••m

to prevent an ignition SOUTce,which could result in an oxygen-fed fire, or ajamrned inle

valve in an oxygen mask stowage box unit, which could result in restricted flow of

OUTING SYt1!\O'1.

oxygen.

NHlALSJSTG

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

DA YS AFTER DATE OF PUBLICA TlON IN THE FEDERAL REGISTER].

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

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

instructions for submitting conunents. '~

OLtTlNG SYMWl

• Fax: 202-493-2251.