AD 92-16-12 R1

92-16-12 R1 BRITISH AEROSPACE: Amendment 39-8702. Docket 93-NM-157-AD. Revises AD 92-16-12, Amendment 39-8321.

Applicability: Model DH/BH/HS/BAe 125 series airplanes, as listed in British Aerospace Service Bulletin SB.53-74-3193C&D, Revision 1, dated March 12, 1992; certificated in any category.

NOTE 1: Model BAe 125-1000A airplanes are not affected by this AD.

Compliance: Required within 4 months after the effective date of this AD, unless accomplished previously.

To prevent fire in the tail cone, accomplish the following:

(a) Install fluid vent masts on the undercarriage fairing, and plug certain existing vent holes, in accordance with British Aerospace Service Bulletin SB.53-74-3193C&D, dated January 7, 1992; or Revision 1, dated March 12, 1992.

(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 2: 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 installation shall be done in accordance with British Aerospace Service Bulletin SB.53-74-3193C&D, dated January 7, 1992; or British Aerospace Service Bulletin SB.53-74-3193C&D, Revision 1, dated March 12, 1992. (The issuance date of Revision 1 of this service bulletin appears only on page 1 of the document.) The incorporation by reference of the former service bulletin was approved previously by the Directorof the Federal Register, in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51, as of September 28, 1992 (57 FR 38266, August 24,1992). The incorporation by reference of the latter service bulletin 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 British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, DC. 20041-0414. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC.

(e) This amendment is effective on September 28, 1992.