AD 2006-23-06 Airworthiness Directives; Airbus Model A300 Airplanes, Equipped With General Electric CF6-50 Series Engines

Models named: A300. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Airbus Model A300 airplanes, certificated in any category; equipped with General Electric CF6-50 series engines.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Modification (f) Within 48 months after the effective date of this AD, modify the airplane and the engine/nacelle to install a third line of defense against inadvertent deployment of the thrust reverser in flight, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A300-78-0022, dated September 27, 2005. Prior/Concurrent Installations (g) Prior to or concurrently with the modification required by paragraph (f) of this AD, do the installations specified in Table 1 of this AD in accordance with the Accomplishment Instructions of the service bulletins listed in Table 1 of this AD. Table 1.—Prior/Concurrent Actions Action Airbus service bulletin (1) Install a structural change in the fan cowl to avoid interference between the third line of defense hardware installed on the thrust reverser and the fan cowl A300-54-0098, dated September 27, 2005. (2) Install a dedicated, shielded electrical circuit, segregated from the current thrust reverser control system A300-78-0021, dated September 27, 2005. Alternative Methods of Compliance (AMOCs) (h)(1) The Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (i) French airworthiness directive F-2005-206, dated December 21, 2005, also addresses the subject of this AD. Material Incorporated by Reference (j) You must use the service information specified in Table 2 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Table 2.—Material Incorporated by Reference Airbus service bulletin— Dated— A300-54-0098 September 27, 2005. A300-78-0021 September 27, 2005. A300-78-0022 September 27, 2005. Issued in Renton, Washington, on October 25, 2006. Kalene C. Yanamura, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6-18663 Filed 11-6-06; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report that the manufacturer has developed a third line of defense against the inadvertent deployment of the thrust reverser of Model A300 airplanes that are equipped with General Electric CF6-50 series engines (in accordance with FAA guidelines). We are issuing this AD to prevent inadvertent deployment of the thrust reverser in flight, which could result in reduced controllability of the airplane.