14 CFR Part 39 [4910-13-P)

DEPARTMENT OF TRANSPORTATION Federal Aviation Administration



# 0;;("[;0 [Docket No. FAA-2010-+++++; Directorate Identifier 2009-NM-259-ADj llflNG SYMBOL RIN 212O-AA64 Airworthiness Directivesj The Boeing Company Model 777-200LR and -30GER Seri Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed ruleroaking (NPRM). SUMMARY: We propose to adopt anew airworthiness directive (AD) forcertain Mo "OUl'lNOJSYMllOt 777-200LR and -300ER series airplanes. This proposed AD would require doing ahigh 

## A 'j1-[c. frequency eddy current (HFEC) inspection forcracking ofthe keyway ofthe fuel tank 

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~ access door cutout on the left and right wings between wing 

### ribnumbers 8 (wing statio 

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# to 387) and 9 (wing station 414.5), and related investigative and corrective actions if necessary. This proposed AD results from reports ofcracks emanating from the keywa ofthe fuel tank access door cutout ofthe lower wing skin between wing rib numbers 8 and 9. We areproposing this AD toprevent loss ofthe lower wing skin load path, whic could cause catastrophic structural failure ofthe wing. DATES: We must receive comments on this proposed AD by [INSERT DATE 45 DAYS AFTER DATE OF PUBLICATION INTHE FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:

• Federal eRulemaking Portal: Go tohttp://www.regulations.gov. Follow the instructions for submitting comments.

• Fax: 202-493-2251. tm>lG SYMOOL ,rlALS"!G

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## '"1491O-13-PI

DEPARTMENT OF TRANSPORT AT10N Federal Aviation Administration 14 CFR Part 39 IDocket No. FAA-2010-+++++; Directorate Identifier 2009-NM-259-AD] R1N 2120-AA64 N(; S'I"'llOl Ainvor"thiness Directives; The Boeing Company Model 777-200LR and -30GER 

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## l' Airplanes
ACTION: Notice ofproposed rulemaking (NPRM). SUMMARY: We propose .toadopt anew airworthiness directive (AD) for certain Mod ITIAlS7 '/ 777-200LR and -30GER series airplanes. This proposed AD would require doing ahigh OATI; 

### 2-1'5 ,c:- frequency eddy current (illee) inspection forcracking ofthe keyway ofthe fuel tank OUI>n9 Symbol AGENCY: Federal Aviation Administration (FAA), DOT.

OVTlNG snm could cause catastrophic structural failure ofthe wing. access door cutout on the left and right wings between wing rib numbers 8 (wing statio tllTW.S{SK> 

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~ necessary. This proposed AD results from reports ofcracks emanating from the keyway OlITlNGSYMIlOlf'\1,Xr\- \

## to::> ofthe fuel tank acces~ door.cutout ofthe lower wing skin betw~en Wi~lg rib numbers ~ INm~~ and 9. We are propos 109th1SAD to prevent loss ofthe lower wmg skill load path, whlcl •. 

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## S 10 387) and 9 (wing station 414.5), and related investigative and corrective actions if

DATES: We must receive comments on this proposed AD by [insert date 45 days after Ntl1AI.5/S1G date ofpublication inthe FEDERAL REGISTER]. ADDRESSES: You may send comments by any ofthe following methods:

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

••mAl5/s1G instructions for submitting comments .
• Fax: 202-493-2251. OUTING SYMOOl[4910-13~PI

DEPARTMENT OF TRANSPORTATION Federal Aviation Administration C:UIUlENCES OUnNG5Y"~Ol



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# c:o~ f\!:m-1I4 INInAl.$15IG [Oockct No. FAA-20IO-+++++; Directorate Identifier 2009-NM-259-ADI RIN 2120-AA64 14 CFR Part 39

frequency eddy current (HFEC) inspection for cracking ofthe keyway ofthe 

### fuel tank Ai~'orthiness Directives; The Boeing Company Model 777-200LR and ~300ER Serie Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice ofproposed rulernaking (NPRM). SUMMARY: We propose to adopt anew ainvorthiness directive (AD) for certain Mod In" 777-200LR and -30GER series airplanes. This proposed AD would require doing ahigh O~TE

access door cutout onthe left and right wings between wing rib numbers 8 (wing statio ••

ofthe fuel tank access door cutout ofthe lower wing skin between wing rib numbers 8 387) and 9 (wing station 414.5), and related investigative and corrective actions if necessary. This proposed AD results from reports ofcracks emanating fTomthe keyvJa
and 9. We are proposing this AD toprevent loss ofthe lower wing skin load path, whie ATE could cause catastrophic structural failure ofthe wing. 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: Go to http://vl\vw.regulations.gov. Follow the instructions for submitting comments. 

## '" • Fax: 202-493-2251. OunNGS'HWL