89-12-06 BRITISH AEROSPACE: Amendment 39-6226.
Applicability: All Model BAC 1-11 200 and 400 series airplanes, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent structural failure of the fuselage accomplish the following:
A. Prior to the accumulation of 30,000 landings or within 1,600 landings after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 1,600 landings, perform visual inspections of the fuselage frame splice joint, skin, stringers, and connecting structure at fuselage station 178 between stringers 2 left and 2 right in accordance with British Aerospace Alert Service Bulletin 53-A-PM5964, Issue 2, dated June 1, 1988. Any cracks found must be repaired prior to further flight, in accordance with the service bulletin.
B. If cracks are found during inspections required by paragraph A., perform additional inspections in accordance with paragraph 2.2. of the Accomplishment Instructions, of British Aerospace Alert Service Bulletin 53-A-PM5964, Issue 2, dated June 1, 1988, and repair all cracks, prior to further flight, in accordance with the service bulletin.
C. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it to the Manager, Standardization Branch, ANM-113.
D. 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 the requirements of this AD.
All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to British Aerospace, Inc., Service Bulletin Librarian, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.
This amendment (39-6226, AD 89-12-06) becomes effective on July 3, 1989.