AD 2000-26-20 Airworthiness Directives; Gulfstream Model G-1159A (G-III) Series Airplanes

Model G-1159A (G-III) series airplanes, serial numbers 357 and 402 through 498 inclusive, certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been 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.

Required as indicated, unless accomplished previously. To prevent the flight crew from being unaware that an electrical system failure has occurred and that the airplane main batteries are powering the direct current (DC) essential bus, accomplish the following: Modification (a) Within 12 months after the effective date of this AD, modify the wiring in the pilot's and co-pilot's junction boxes, the auxiliary power relay box, the power distribution box, and the master caution panel, in accordance with Gulfstream Customer Bulletin No. 149, dated March 23, 1999, and Gulfstream Aircraft Service Change No. 294, dated February 3, 1999. Alternative Methods of Compliance (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, Atlanta Aircraft Certification Office (ACO), FAA. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Atlanta ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Atlanta ACO. Special Flight Permits (c) Special flight permits may be issued in accordance with §§ 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. Incorporation by Reference (d) The actions shall be done in accordance with Gulfstream Customer Bulletin No. 149, dated March 23, 1999, and Gulfstream Aircraft Service Change No. 294, dated February 3, 1999. ( Note: The issue date of Gulfstream Aircraft Service Change No. 294 is indicated only on the title page of the document; no other page of the document contains this information.) 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 Gulfstream Aerospace Corporation, P.O. Box 2206, M/S D-10, Savannah, Georgia 31402-9980. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Atlanta Aircraft Certification Office, One Crown Center, 1895 Phoenix Boulevard, suite 450, Atlanta, Georgia; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. Effective Date (e) This amendment becomes effective on February 14, 2001. Issued in Renton, Washington, on December 29, 2000. Dorenda D. Baker, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 01-339 Filed 1-9-01; 8:45 am] BILLING CODE 4910-13-P