SUMMARY: We propose to adopt anew airworthiness directive (AD) forcertain Mo 

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737-900ER series airplanes. This proposed AD would require doing aone-time general 14CFR Part 39 14910-13-P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration



# 0,&4 (Docket No. FAA-2010-1 I III; Directorate Identifier 2009-NM-260-ADJ RJN 2120-AA64 Airworthiness Directives; The Boeing Company Model 737~900ER Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (l\rpRM). IlOIITlnG 'T"8OI. 

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• visual inspection forake)'\vay intwo fuel tank access door cutouts, and related CUE 

## o investigative and corrective actions ifneCeSsarYI" This prop~sed AD ~esults from report lnG"_ ofcracks emanating from the keyway ofthe fuel tank access hole. We are proposing till 'Hm..,-,,=~~rUA~ AD to detect and correct such cracking, which dould result inthe loss ofthe lower wing ()4r~ skin load path and consequent 

# ,! ;ti struttural failure ofthe wing. ~" •• o,,"~, DATES: We must receive comments on this prbposed AD by [INSERT DATE 45 'Hm~'-"'Sr",~~rUA! DAYS AFTER DATE OF PUBLICA nON rN

# rHE FEDERAL REGISTER]. ,." ADDRESSES: You may send comments by aniY ofthe following methods: """m":;SY"'!lOI.

• Federal eRulemaking Portal: Go to htlj):II\'.,:ww.regUlatiOl1s.g~v. Follow the ,"mA"""""'."ATUA~ instructions for submitting comments. DArE

• Fax: 202-493-2251. AOVT'H';;SY"'!lOL

• Mail: U.S. Department ofTransportation, Docket Operations, M-30, West IHfW. ••••••"'HATURf: Building Ground Floor, Room W] 2-140, 1200New Jersey Avenue SE., Washington, D [lAr~ 20590.

FAA Form 1360-14.1 (6-89) OFFICIAL FilE COPY[4911J-I3-PI

DEI'ARTMENT OF TRANSPORT AnON Federal Aviation Administration 

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INITIAlS/SIG

DATE
ROUTING SYMBOL J ;I' structural failure ofthe wing. DATES: We must receive comments on this priPosed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION IN [HE FEDERAL REGISTER]. ADDRESSES: You may send comments by an ofthe following methods:

• Federal eRulemaking Portal: Go to htJ:Jlwww.regulations.Q.ov. Follow the Airworthiness Directives; The Boeing Company Model 737-900ER Series Airplanes AGENCY: Federal Aviation Administration

# (Fr)' DOT ACTION: Notice ofproposed rulemaking (NPRM). DATE/ I 

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# 2-'1'0 SUMMARY: Wepropose to adopt anew airworthiness directive (AD) for certain Mod OUTING.srnBOL



# t ~-,;'<>\ 737-900ER series airplanes. This proposed AD "Guld reql].ire doing aone time general 'NJnAL.SISlG 

### f~;&O~ visual inspection for akeyway intwo fuel tank access door cutouts, and related DATE investigative and corrective actions ifneCeSSaryj This proposed AD results from reports o~n~sy",oo

### 'I-/) I ofcracks emanating from the keyway ofthe fuel tank access hole. We are proposing thi (:idt,J cv..dque (.(- 

# l AD to"'PEf'

refit the loss ofthe lower wing skin 10 dpath, which could result in RIN 2121J-AA64 14 CFR Part 39 [Docket No. FAA-2010-+++++j Directorate Identifier 2009-NM-260-AD)

NITIAlS/SIG instructions for submitting comments. DATE • Fax: 2IJ2-493-2251. ROUTING SYMBOL • Mail: U.S. Department ofTransportattn, Docket Operations, M-30, West Building Ground Floof, Room W12-140, 1200 1'NnvJersey Avenue SE., Washington, D NITIAL.5!SIG 20590. OUTINGSYM~OL
INITIALS/SIr;(4910-13-P)

DEPARTMENT OF TRANSPORTATION Federal Aviation Administration (lM:U •••••. E"CES OUTING SYMBOL 14 CFR Part 39 (Docket No. FAA-2010-1 I IIIj Directorate ntentifier 2009-NM-260-AD] R1N 2120-AA64 

# I Ainvorthiness Directives; The Boeing Company Model 737-900ER Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulemaking (NPRM). INI1IA!.5/SIG

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LlAH ofcracks emanati~g from £!1e keyway ofthe fuel tank access hole. We are proposing thi dek~",~urFt,..f AD to\ s,cat the loss ofthe lower wing skin load path, which could result in
: $ , pili' structural failure ofthe wing. SUMMARY: We propose to adopt anew airworthiness directive (AD) for certain Mod OUTI'«>SY><BOl

. I ~-I'l¢ 737~900ER senes airplanes~ This proposed AD

wI auld require doing a one time general INI11At.S(SIG 

## ff;~~ visual inspection for akeyWay intwo fuel tank access door cutouts, and related CATE investigative and corrective actions ifnecessar) This proposed AD results from reports ~"9S 

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DATES: We must receive comments on this proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION IN tHE FEDERAL REG1STER]. ADDRESSES: You may send comments by anJ ofthe following methods:

• Federal eRulemaking Portal: Go to hJ:;/www.regUlations.gOv. Follow the HlTVJ.SISIG instructions for submitting comments.

• Fax: 202-493-2251.

• Mail: U.S. Department ofTransportation, Docket Operations, M-30, West NLnA1SfS1G Building Ground Floor, Room W12-140, 1200New Jersey A,..venue SE., Washington, D 20590. All:
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