14 CFR Part 39

14910-13-PI

DEPARTMENT OF TRANSP(j)RTATION

Federal Aviation AdministratiJn

11.6&

[Docket No. FAA-2010~++++j Directorate Identifier 201O-NM-128-AD)

RlN 2120-AA64

NCURRt!NCL:,

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Ainvorthincss Directives; The Boeing Company Model 777-200, -200LR., -300, and t/-:1~

"'"lOU/ID -30GER Series Airplanes vI Y'

i<OUTlNG SYMOOI.

AGENCY: Federal Aviation Adfinistration (FAA), DOT

ACTION: Notice of proposed ru cmaking (NPRM:)

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SUMlVIARY: We propose to ado t a new anworthiness duective (AD) for certain Mode 11/ ILliG

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777-200, -200LR, -300, and -30GER series airplanes. lbis proposed AD would require

repetitive detailed inspections foidiSbOnding and tearing and measurements for wear of

the. internal diam~ter (ID) ofth~ I aron-lined, bushings o~,the bUl.kh~a,d s~PPortj~CkSCre ~Ol1r GSVMilOL

fittmg and of the Jackscrew fittmg of the hOrizontal stabilIzer; repetIttve mstallatlOns of

the horizontal stabilizer trim actJtor (HST A); and if necessary, replacement of the 1,'ITIA'-'>'S1"

bushings with new bushings and ill applicable related investigative and corrective 1""110

actions. This proposed AD resultl from a report indicating that a Karon-lined bushing POllT,~GSYMBOl

with the liner broken into five PiJces was found during a scheduled inspection of the INITIACSISIG

HSTA components; the broken liher had worn and disbonded from the bushing. We are DAlE

proposing this AD to detect and donect discrepancies of the HST A attachment locations, ROllTlNGSYMFlOL

which could result in reduced strJctural integrity of the horizontal stabilizer and 'MTIAlSlSlG

consequent loss of controllability of the airplane.

DATES: We must receive comm1ents on this proposed AD by [INSERT DATE 45

DAYS AFTER DATE OF PUBLtCATION IN THE FEDERAL REGISTER].

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

• Federal eRulemaking Portal: Go to http://www.regulatiol1s,gov. Follow the

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RO'IT<NG S\'''''<ell

ATE
14910-13-Pj

DEPARTMENT OF TRANSpdRTA T10N

Federal Aviation Administratiorl

14 CFR Part 39

/Docket No. FAA-2010-++++; Directorate Identificr 201O-NM-128-AD]

RlN 2120-AA64

Ainvorthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and

-30GER Series Airplanes

AGENCY: Federal Aviation Adjlinistration (FAA), DOT.

ACTION: Notice of proposed ruJemaking (NPRM).

I

ONCURRE'lCES

ROUnNG SV"'B01.

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;"mAl5J'SIG

D. WilsoY[

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7-7-ZoI0

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

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777-200, -200LR, -300, and -300iR series airplanes. This proposed AD would require a DATe

detailed inspection and measurement of the Karon-lined bushings of the jackscrew fittinli"9~ 0

of the horizontal stabilizer trim actuator (HSTA) and related investigative/corrective

actions if necessary. This proposL AD results from a report ~I'l~a Karon-line

bushing with the liner broken inth five piece~\was tound during a scheduled inspection

the horizontal stabilizer trim actuator (HSTA) components; the broken liner had worn

disbonded from the bushing. We are proposing this AD to detect and correct

discrepancies of the HSTA attachment locations, which could result in reduced structur

integrity of the horizontal stabilizer and consequent loss of controllability of the airplan . -

I I NlnAlS,ISI(;

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

I ~

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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

• Federal eRulemaking ,ortal: Go to http://WWW'.reg~lations.gov. Follow the

instructions for submitting comments.

O\1T1HG SYHaOL

• Fax: 202-493-2251.

'NIl1ALSISIG
[4910-I3-P]

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration :OtlCll~RE"CES

OlJnNG 5\'M8Q1

14 CFR Part 39

IDocke! No. FAA-2010-++++; Directorate Identifier 201O-NM-128-AD]

IUN 2120-AA64

Ainvortbincss Directives; The Boeing Company Model 777-200, -200LR, -300, and

-30GER Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

MJ "'-I iLl

FNlllALSISlG

D. Wi/so,!

lATE

7/7 I'D . OUTlttG $Yt<~0l

7-"1-Zo10

ACTION: Notice of proposed rulemaking (NPRM). OIInNGSYM6CXSUMMARY: We propose to adbpt a new airworthiness directive (AD) for certain Mod NI1~MlS/SIG

. I ~ "

777-200, -200LR, -300, and -30GER series airplanes. This proposed AD would require a OA ( _1i::-kV

P (0

detailed inspection and measurement of the Karon-lined bushings of the jackscrew fittin

of the horizontal stabilizer trim actuator (HSTA) and related investi~ative/corrective

actions if necessary. This proposed AD results from a report mmestiAgahat a Karon-lin

bushing with the liner broken into five piec~SAw(1:)found during a scheduled inspection

the horizontal stabilizer trim actuator (HST A) components; the broken liner had worn

dIsbanded from the bushing. wJ are proposing this AD to detect and correct

discrepancies of the HSTA attadhment locations, which could result in reduced structUT

."

"1-/q-/d

ovmlG 5~1<&l(.

1tIJ/'(-IOOS

NmAlS/5IG

Al~

O\fTING S~"'I>OL

NlTI,o.lS/SIG

.n

• Fax: 202-493-2251.

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

integrity of the horizontal stabilizer and consequent loss of controllability of the airplan 5EA-Wg

~

• Federal eRulemaking Portal: Go to http://wvvw.regHlations.gov. Follow the

. ., b" I .

Instructions lor su mlttmg comments. '

I

DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

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