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### 20590. • Mail; U.S. Department ofTransportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200New Jersey Avenue S£., Washington, D • Fa>:;202-493-2251. 

### instructions forsubmitting comments. date ofpublication inthe FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods: the potential ofignition sources inside fuel tanks, which, in combination with flammabl fuel vapors, could result infuel tank explosions and consequent loss ofthe airplane. DATES: We must receive comments on this proposed AD by [insert date 45 days after Federal Aviation Administration

• Federal eRulemaking Portal: Go to hnp:/I\.vw'.v.re!.l.ulations.t!.ov. Follow the 

# 0031 [Docket No. FAA-2010-1 Iii ,;

### Directorate Identifier 2009-NM-240-ADj

fuel system reviews conducted by the manufacturer. Weare proposing this AD to preve AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: NOliceofproposed ruJemaking (NPRM). Ainvorthiness Directives; The Boeing Company Model 737-700 (lOW) Series

SUMMARY: Wepropose to adopt anew airworthiness directive (AD) forcertain Mod 737-700 (lOW) series airplanes. This proposed AD would require deactivation or modification ofPATS Aircraft, LLC, auxiliary fuel tanks. This proposed AD results fro 14CFR Part 39

Airplanes Equipped with Auxiliary Fuel Tanks Installed in Accordance with Configuration 3ofSupplemental Type Certificate ST00936NY DEPARTMENT OF TRANSPORT AnON

RlN 2120-AA6414910-I3-Pj (QI«U""l"'-'OS 1I01.1TI"'G

S"'lOOl ANE-173 DEPAHTMENT OFTRANSPOHTA nON Fedcnll Aviation Administration 

### 14CFR Par' 39 IDocket No. FAA-2010-+++++; Dil"cctorafc Identifier 2009-NM-240-AO) HIN 2120-AA64 Ain\'orthincss Ilirccf'ivcs; The Boeing Company Mode17J7-700 (lOW) Series 

### Airplanes Equipped with Auxiliw"y Fuel Tank::;In,stalled IIIAecorc!,lIlce wilh Configuration ~of Supplemental Type CerLificate ST00936N Y AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). 

### KD wliH'

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Model BDave 737-700 (IGW) series airplanes. This proposed AD would require deactivation or ""lnt"1> .\"~~l<)l modification of PATS Aircraft, LLC, auxiliary fuel tanks. This proposed AD results from ANE-170 ,..In~L.""'''', fuel system reviews conducted 

### by the manufacturer. We are proposing this AD to prevent ASocias 

## ~, the potential ofignitioll sources imide fuel tanks, which, ill combination with flammable ruel vapors, could result in fuel tank explosions and consequent loss or the airplane. DATES: We lllust receive comments on this proposed AD by linserL Jate 45 days after 

### date ofpublication inthe FEDERAL REGISTER]. '1<1'" tN<I

### "'''LO~ ADDRESSES: You may send commenls by all)' ofthe following methods: e Federal eRulemaking Portal: Go to hLlp://w"vw.regulations.g.ov. Follow the instructions lor submitting C01ll111cnts_

ll> Fax: 202-493-2251. 

### """~~ v Mail: U.S. Department ofTransportation, Docket Operations, M-30, Wesl Building Ground Floor, Room WI2-140, 1200 New Jersey Avenue SE., Washington, DC 20590.[4910-13-1'1 DEPARTMENT OF TRANSPORTATION 

### Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2010-1 II ! !;Directorate Identifier 2009-NM-240-AD) RIN 2120-AA64 Airworthiness Directives; The Boeing Company Model 737-700 (lOW) Series Airplanes Equipped with Auxiliary Fuel Tanks Installed in Accordance with Configuration 3 of Supplemental Type Certificate STOO936NY AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: We propose to adopt anew airworthiness directive (AD) for certain Model 737-700 (IGW) series airplanes. This proposed AD would require deactivation or modification ofPATS Aircraft, LLC, auxiliary fuel tanks. This proposed AD results from fuel system reviews conducted by the manufacturer. We are proposing this AD to prevent the potential ofignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss ofthe airplane. DATES: We must receive comments on this proposed AD by [insert date 45 days after date ofpublication inthe FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:

• Federal eRulemaking Portal: 00 to http://www.regulations.gov. Follow the instructions for submitting comments.

• Fax: 202-493-2251.

• Mail: U,S, Department ofTransportation, Docket Operations, M-30, West Building OroWld Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington,. DC 20590. ~ ~ ~GSY><BO•• ANE-173 lNlTl

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