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DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration -ONCIJRRcNCES

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14 CFR Part 39

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rDocket No. FAA-~+++++; Directorate Identifier 2010-NM-127-AD]

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Ainvorthiness Directives; The Boeing Cornp3r].yModel 777-200 and -300 Series

Airplanes Equipped with Rolls-Royce RB211 Trent 800 Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Mode Nl{TIAlS;,sIG

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777-200 and -300 series airplanes. This proposed AD would require repetitive inspectio ATE, I

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proposing this AD to detect and correct a degraded TIR inner wall panel, which could

lead to failure of a T/R and adjacent components and their consequent separation from

reverser events related to thermal damage of the thrust reverser inner wall. We are

and corrective actions if necessary. This proposed AD results from reports of thrust

of all thrust reverser (T/R) structure and sealant for degradation, and related investigativ

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the airplane, which could result in a rejected takeoff (RTO) and cause asymmetric thrust ATE

and consequent loss of control or the airplane during reverse thrust operation. If a thrust Qu!:f?;~~~

~ reverse~verheats, separated components co~~amage to th - H4 ItllnAL.$,'SlG

airplane, damage to other airplanes, or possible injury to people on the ground.

DATES: We must receive comments on (his proposed AD by [INSERT DATE 45 I /0 !!

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DA YS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. - DO

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

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

instructions for submitting comments.
14910-I3-P]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-1 I I I I; Directorate Identifier 2010-NM-127-AD] f\ Z"ci'a-G'

:RIN 2120-AA64 1-a.~IO

Ainvorthiness Directives; The Boeing Compaqy Model 777-200 and -300 Series

Airplanes Equipped with Rolls-Royce RE21t Trent 800 Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

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ACTION: Notice of proposed rulemaking (NPRM).

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

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I

(VTING SVM60L

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777-200 and -300 series airplanes. This proposed AD would require repetitive inspectio

proposing this AD to detect and correct a degraded T/R inner wall panel, which could

lead to failure of a T/R and adjacent components and their consequent separation from

and corrective actions if necessary. This proposed AD results from reports of thrust

of all thrust reverser (l/R) structure and sealant for degradation, and related investigativ

reverser events related to thermal damage of the thrust reverser inner wall. We are

the airplane, which could result in a rejected takeoff(RTO) and cause asymmetric thrust

and consequent loss of control of the airplane during reverse thrust operation. If a thrust

i~ne; wall reversel;verheats, separated components co~~~amage to th

airplane, damage to other airplanes, or possible injury to people on the ground.

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

DA YS AJ'TER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

tITTIM.5!SIG

ADJ>RESSES: You may send comments by any of the following methods:

• Federal eRulemaking Portal: Go to hnp://wv./w.rcgulations.gov. Follow the

instructions for submitting comments.