86-07-05 BRITISH AEROSPACE AIRCRAFT GROUP (BAe): Amendment 39-5271. Applies to all BAe Model HS 748 airplanes, certificated in any category. Compliance is required within the next 750 hours time in service after the effective date of this AD, or upon accumulating the service threshold as specified in paragraph 1.D of BAe Service Bulletin 57/75, Revision 1, dated August 1984, whichever occurs later; and thereafter at the intervals as specified in the service bulletin. To detect cracks in the wing structure, accomplish the following, unless already accomplished:
A. Inspect the wing structure at rib 134.366 and adjacent areas in accordance with BAe Service Bulletin 57/75, Revision 1, dated August 1984. Repair any damage found in accordance with the requirements specified in the service bulletin.
B. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.
All persons affected by this directive who have not already received the appropriate service document from the manufacturer may obtain copies upon request to British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, D.C. 20041. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.
This amendment becomes effective May 8, 1986.