14910-13-1'1

DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14n-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"~ 

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### 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, iftwo 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 -It u.s. GOVERNMENT PRINTING OFFICE: 1995·769·211I \ DEPARTMENT OFTRANS1'ORTATIONo 

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. I :' Series Airplanes; Model~20Q sQies AirpJ~es;'and Moiiel A~300 ~es 

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.. (DOT). .' -'l~~. ACTION: Final rule; req~*-eomrnc:nts.

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### !Ji~~_!Oiitees~ the Olght-l$ntI:ols ofJJP.,Auius,:A330 or A34(laeroplane WllJrevert to ahe.,..,.I •••• theaitlnpJ10t(AP)''O)d~ 

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Fli»t'Directors

(FDl~ arc ~matically~ved. j

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_ 1 • -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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