93-22-06: Generator Control Unit

93-22-06 AIRBUS: Amendment 39-8730. Docket 93-NM-99-AD. Applicability: Model A300 series airplanes, excluding Model A300-600 series airplanes and Model A310 series airplanes; on which Airbus Modification 10361 has not been installed; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent liquid from entering the generator control unit (GCU) and causing internal short circuits, which could result in the failure of the GCU and subsequent loss of electrical generation capacity, accomplish the following: (a) Within 6 months after the effective date of this AD, install a protective cover over each GCU and install a drainage circuit, in accordance with Airbus Industrie Service Bulletin A300-24-0082, dated March 3, 1993. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The installations shall be done in accordance with Airbus Industrie Service Bulletin A300-24-0082, dated March 3, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Airbus Industrie, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on December 17, 1993.