14910-13-1'1

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 n-R Part 39

00;('1

IDocket No. FAA-201I-*****; Directorate Identifier 2010-NM-279-AD;

105 S3 OfJ.-oq

Amendment 39-*****; AD 2011-**-**1

RIN 2120-AA64

Airworthiness Directives; Airbus Model A330-200 Series Airplanes; ModeJ A3JO-3

Series AiqJlanes; Model A340-200 Series A.irplanes; and Model A340-300 Series

Ailvlanes

AGENCY: Federal Aviation Administration (FAA), Depm1mcnt ofTranSpOliatioll

(DOT).

O"T~

I'2/27/Z"~

51!kill!GI I /1

ACTION: Final rule; request for comments.

SUMlVIARY: We are adopting a new airworth.iness directive (AD) for the products lis

above. This AD results from mandatory continuing airw0l1hiness infoll11ation (MeAl) "" I"GSnoeOc

originated by 3n aviation authority of another country to idcnti fy and correct an unsafe

condition on an aviation product. The MeAl describes the unsafe condition as:

When there are significant differences between all airspeed sources, the

Oight controls of an Airbus A330 or A340 aeroplane will revert to

altcmate law, the autopilot (AP) and the auto-thrust (NTHR)

automatically disconnect, and the Flight Directors (FD) bars arc

automatically removed.

It has been identified that, after such an event, if two airspeed sources

become simIlar while still erroneous, the flight gUidance computers will:

- Display FD bars agall1, and

- Enable autopilot and auto-thrust re-engagement

FAA Form 1360-14.1 (6-89) OFFICIAL FILE COPY

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DEPARTMENT OFTRANS1'ORTATIONo

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AIno.~ Dirediv<F..~ M<:>deI.A3l1J,'2@·SericsAirp~,Modd Aim-

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SeriesAirplanes; Model~20Q sQies AirpJ~es;'andMoiielA~300 ~es

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ACTION: Final rule; req~*-eomrnc:nts. _ , ri._ '.:::;-~

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SUMl\fAR.Y:We ag:_adqp~g k ~ airwo~ di~VC:1Af9-_for ,the~uct$' :- ~~ -c:.."':.-.

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abo"e. ~.AD results- frolTl~~dalory ,col)tinu!1lgairwortbirit;ss infomiatiop (MeAl), ~~.,.......

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originated bY"8Qa\liati~~oqty ot llnotlJ,er,40Wltry to i~el}iif)ditid-c;;orrecf~ wJS#,er ••••••• -;,!"'II'- .

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conditiOn on~anaviation pi'O:duct The MCAl-deSqibes the iutsafe~ritliti6n 3$: ' :' "t~';

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~ thetd3Cc·iil~t.,diffe~ ~een !Ji~~_!Oiitees~the

Olght-l$ntI:ols ofJJP.,Auius,:A330 or A34(laeroplane WllJ revert to

ahe.,..,.I •••• theaitlnpJ10t(AP)''O)d~ """"thnM (A,TIul.)

·auto~caJlydi~ and.theFli»t'Directors(FDl~ arc

~matically~ved. j

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-It~.~' identified,that.- aftersucll an ~'ent. iftwo aif~pce(t.$Ources·

become similar w-btte-SiLIlerroneous •.aie'fi~ighl guiaaJ}ce C9.mPfllcrs will:

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- Display FO'bars 'agaih~and

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- Eh~l¢ aUI9pilo[:aD.davto~thruslJe ..,~&emcrn, '"("--',

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