14 CFR Part 39

[4910-13-P)

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

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[Docket No. FAA-2010-+++++; Directorate Identifier 2009-NM-259-ADj

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RIN 212O-AA64

Airworthiness Directivesj The Boeing Company Model 777-200LR and -30GER Seri

Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed ruleroaking (NPRM).

SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Mo

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777-200LR and -300ER series airplanes. This proposed AD would require doing a high A 'j1-[c.

frequency eddy current (HFEC) inspection for cracking of the keyway of the fuel tank N~\f(i\~

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access door cutout on the left and right wings between wing rib numbers 8 (wing statio 3 A Gto

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

necessary. This proposed AD results from reports of cracks emanating from the keywa

of the fuel tank access door cutout of the lower wing skin between wing rib numbers 8

and 9. We are proposing this AD to prevent loss of the lower wing skin load path, whic

could cause catastrophic structural failure of the wing.

DATES: We must receive comments on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods:

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

instructions for submitting comments.

• Fax: 202-493-2251.

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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 Sene ftJ,.)in-fZO l'

Airplanes

ACTION: Notice of proposed rulemaking (NPRM).

SUMMARY: We propose .toadopt a new airworthiness directive (AD) for certain Mod ITIAlS7 '/

777-200LR and -30GER series airplanes. This proposed AD would require doing a high OATI;

2-1'5 ,c:-

frequency eddy current (illee) inspection for cracking of the keyway of the fuel tank OUI>n9 Symbol

AGENCY: Federal Aviation Administration (FAA), DOT.

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could cause catastrophic structural failure of the 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 of cracks emanating from the keyway OlITlNGSYMIlOlf'\1,Xr\- \to::>

of the fuel tank acces~ door. cutout of the lower wing skin betw~en Wi~lgrib numbers ~ INm~~

and 9. We are propos 109th1SAD to prevent loss of the lower wmg skill load path, whlcl •. " .

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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 of publication in the FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods:

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

••mAl5/s1G

instructions for submitting comments .

• Fax: 202-493-2251.

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[4910-13~PI

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration C:UIUlENCES

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[Oockct No. FAA-20IO-+++++; Directorate Identifier 2009-NM-259-ADI

RIN 2120-AA64

14 CFR Part 39

frequency eddy current (HFEC) inspection for cracking of the keyway of the fuel tank

Ai~'orthiness Directives; The Boeing Company Model 777-200LR and ~300ER Serie

Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulernaking (NPRM).

SUMMARY: We propose to adopt a new ainvorthiness directive (AD) for certain Mod In"

777-200LR and -30GER series airplanes. This proposed AD would require doing a high O~TE

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

of the fuel tank access door cutout of the 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 of cracks emanating fTomthe keyvJa

and 9. We are proposing this AD to prevent loss of the lower wing skin load path, whie ATE

could cause catastrophic structural failure of the wing.

DATES: We must receive comments on this proposed AD by [insert date 45 days after

date of publication in the FEDERAL REGISTER].

ADDRESSES: You may send comments by any of the following methods;

• Federal eRulemaking Portal: Go to http://vl\vw.regulations.gov. Follow the

instructions for submitting comments.

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• Fax: 202-493-2251.

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