Airworthiness Directive · Amendment 39-15181 · Flight controls
Airbus Model A330 and A340 Airplanes
This AD applies to airplanes specified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD:
(1) Model A330 airplanes, certificated in any category, with Modification 49144 installed in production, but without Production Modification 55185 or Airbus Service Bulletin A330-27-3142 installed in-service.
(2) Model A340-200 and -300 series airplanes, certificated in any category, with Modification 49144 installed in production, but without Production Modification 55185 or Airbus Service Bulletin A340-27-4142 installed in-service.
(3) Model A340-500 and -600 series airplanes, certificated in any category, without Production Modification 55186 or Airbus Service Bulletin A340-27-5036 installed in-service.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Within 900 flight hours after the effective date of this AD, and thereafter at intervals not to exceed 900 flight hours, perform an operational test of the BCM and back-up power supply (BPS) by BITE (built in test equipment), and as applicable, apply the corrective actions, in accordance with instructions defined in Airbus Service Bulletin A330-27-3147, dated August 4, 2006; Airbus Service Bulletin A340-27-4147, dated August 4, 2006; or Airbus Service Bulletin A340-27-5038, dated August 4, 2006; as applicable. Replacement of affected BCM in accordance with Airbus Service Bulletin A330-27-3142, dated August 17, 2006; A340-27-4142, dated August 17, 2006; or A340-27-5036, dated August 17, 2006; cancels the mandatory repetitive operational test.
(2) Within 26 months after the effective date of this AD, install modified BCM in accordance with instructions given in Airbus Service Bulletin A330-27-3142, dated August 17, 2006; Airbus Service Bulletin A340-27-4142, dated August 17, 2006; or Airbus Service Bulletin A340-27-5036, dated August 17, 2006; as applicable.
Note: This AD differs from the MCAI and/or service information as follows: No Differences.
