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\Q proposed AD would require ageneral 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 14CFR Part 39 

# 1042 [Docket No. FAA-2010-++++; Directorate Identifier lOlO-NM-094-ADJ

AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: Wepropose to adopt anew airworthiness directive (AD) forcertain

crew oxygen mask stowage boxunits, and corrective actions ifnecessary. This propose AD results from reports that certain crew oxygen mask stowage box units were possibly delivered with aburr inthe inlet fitting. The burr may break loose during test oroperatio andmay pose an ignition source or cause an inlet valve tojam. We areproposing this A toprevent an ignition source, which could result inan oxygen-fed fire, orajammed inle valve in anoxygen mask stowage box unit, which could result inrestricted flow of oxygen. DATES: We must receive comments onthis proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:
• Federal eRulemaking Portal: Goto 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; 1ggo-()- nS·01 21201 0 I1491O-I3-Pj

DEPARTMENT OF TRANSPORTATION Federal Aviation Administ.-ation ~O"C""RRE~CES OU,ING S'MBOl 14CFR Part 39 [Docket No. FAA-2010-++++j Directorate Identifier 2010-NM-O.94-ADI RIN 2120-AA64 

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## -/0 ACTION: Notice ofproposed rulemaking (NPRM)_ eounNG SYMBOL 

# /IIA!I-jswPf SUMMARY: We propose to adopt anew airworthiness directive (AD) for certain ~ I\',- "Lo J~ 737-700, -70De, -800, -90GER, 747-400F, and 767-200 and -300 series airplanes. This OAr,} 

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# ° 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 ifnecessary. This proposed 

# r~rL REG 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'-/- ROUTING smOGL 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 INTHE 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 tojam. 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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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 ofproposed rulemaking (NPRM). 

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# ,,7))//(: SUMMARY: Wepropose to adopt anew airworthiness directive (AD) forcertain -. [N lA,S .I~~ 737-700, -700C, -800, -900ER, 747-400F, and 767-200 and -300 series airplanes. This 

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### 10 proposed AD would require ageneral visual inspection foraffected serial numbers ofth _'''II S•••

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# 1/18!o OIJTING S'<M801. and may pose an ignition source orcause an inlet valve tojam. We areproposing this A 

# em iNtnALSIS1G crew oxygen mask stowage box units, and corrective actions ifnecessary. This proposed •• m

toprevent an ignition SOUTce, which could result in an oxygen-fed fire, orajamrned inle valve inanoxygen mask stowage box unit, which could result inrestricted flow of OUTING SYt1!\O'1. oxygen. NHlALSJSTG DATES: Wemust receive comments onthis proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICA TlON INTHE FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods: NnlAWSTG • Federal eRulemaking Portal: Goto http://www.regulations.gov. Follow the 

## , instructions for submitting conunents. '~ OLtTlNG SYMWl • Fax: 202-493-2251.