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# cJ~ instructions for submitting comments. DATES: We must receive comments on this proposed AD by [INSERT DATE 45 DAYS DC-9-8! (MO-8!), DC-9-82 (MO-82), DC-9-83 (MO-83), DC-9-S? (MO-8?), and MD-88

inside fuel tanks, which, in combination \vith flammable fuel vapors, could result in fuel tank explosions and consequent loss ofthe airplane. ADDRESSES: You may send comments by any ofthe following methods: AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER],

• Federal eRulemaking Portal: Go to http://••. ,,\\'w.regulations.gov_ Follow the the manufacturer. We are proposing this AD to prevent the potential of ignition sources

• Fax: 202-493-2251. ,,,,, • Mail: U.S. Department ofTransportation, Docket Operations, M-30, West Building 

# I

# bitqilD Ground Floor, Room WI2-140, 1200 New Jersey Avenue SE., Washington, DC 20590. airplanes. This proposed AD would require installing fuel level float and pressure switch 10- line fuses on the wing fOr\\'ard spars and forward and aft auxiliary fuel tanks, depending on lhe airplane configuration. This proposed AD results from fuel system reviews conducted by ""1£ - DC-9-82 (MD-82), DC-9-83 (MD-S3), DC-9-8? (MD-8?), and MD-88 Airplanes Ainvorihiness Directives; McDonnell Douglas Corporation Model DC~9-81 (MD-81), RiN 2UO-AA64 

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# q [Docket No. FAA~201O~+++-+; Directorate Identifier 201O-NM-I09-AD] Federal Aviation Administration (4910-I3-Pj 

### DEPARTMENT

OFT~SPORTA nON

AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: We propose to adopt anew airworthiness directive (AD) for certain Model 14CFR Part 39

FAAForm 1360-14.1 (6-89) OFFICIAL FilE COPY(491O-13-PJ



### DEPARTMENT OF TRANSPORTATION FederalAviation Administration 14CFR Part 39 [Docket No. FAA-2010-++++; Directo.-ate Identifier 2010-NM-I09-AD] RlN 2120-AA64 Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-81 (MD-8!), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). NCURRENCES ROUT'NG,,",'80L



### SUMMARY: Wepropose to adopt anew airvvorthiness directive (AD) forcertain Modr;""""",,,-_ m,'l)TIN(; sYMOOI. 

### DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and JNlTlAl.5'Si~ 

### MD-88 airplanes. This proposed AD would require installing fuel1cvcl float and pressll e 

## 6,,",---- switch in-line fuses onthe wing forward spars and forward and aft auxiliary fuel tanks, ~w",m"""''''''''''!IO~c - 

### depending onthe airplane configuration. This proposed AD results from fuel system 1~ITIAl."'SL~ 

### reviews conducted by the manufacturer. Vieareproposing this AD toprevent the potential ofignition sources inside fuel tanks, which, incombination with flammable fu I kw",m",,"',",,"",oooocc- 

### vapors, could result infueltank explosions and consequent loss ofthe airplane. DATES: We must receive comments onthis proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION INTHEFEDERAL REGISTER], ADDRESSES: You may send comments by any ofthe following methods: • Federal eRulernaking PortaL Go tohttp://www.regulations.goy. Follow the instructions for submitting comments . • Fax: 202-493-2251. INn·IM"""""' 

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