Airworthiness Directive · Amendment 39-11719 · Airbus Model A300-600 Series Airplanes
Airbus Model A300-600 Series Airplanes
Model A300-600 series airplanes, certificated in any category, except those airplanes on which Airbus Modifications 11661 and 11676 (Airbus Service Bulletin A300-32-6069) and 12095 (Airbus Service Bulletin A300-32-6077) have been installed.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (b) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300-600 series airplanes, that requires modification of certain electrical looms of the nose and main landing gear and modification of the rotor shaft attachment of the nose and main landing gear tachometers. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent erratic operation of the wheel tachometers, which could result in degradation of the braking performance, and possible increased landing roll.
To prevent erratic operation of the wheel tachometers, which could result in degradation of the braking performance, and possible increased landing roll, accomplish the following:
(a) Within 18 months after the effective date of this AD, accomplish the requirements of paragraphs (a)(1) and (a)(2) of this AD.
(1) Modify the electrical looms of the nose and main landing gear, in accordance with Airbus Service Bulletin A300-32-6069, Revision 01, dated December 29, 1999; and
(2) Modify the rotor shaft attachment of the nose and main landing gear tachometers, in accordance with Airbus Service Bulletin A300-32-6077, Revision 01, dated September 25, 1999.
Note 2: Messier-Dowty Service Bulletins 470-32-779, dated April 14, 1997, and 470-32-777, dated July 1, 1997, are referenced in Airbus Service Bulletin A300-32-6069. Messier-Bugatti Service Bulletin C20105-32-782, dated October 17, 1996, is referenced in Airbus Service Bulletin A300-32-6077. The Messier-Dowty and Messier-Bugatti service bulletins are additional sources of service information for accomplishing the applicable actions required by this AD.
Note 3: Accomplishment of the modifications required by paragraph (a) of this AD, prior to the effective date of this AD, in accordance with Airbus Service Bulletin A300-32-6069, dated June 13, 1997, or A300-32-6077, dated May 28, 1999, is considered acceptable for compliance with the applicable requirements specified by this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
