AD 88-07-03

88-07-03 BRITISH AEROSPACE: Amendment 39-5877. Applies to Model BAe-125 series airplanes listed in BAe-125 Service Bulletin 57-66, Revision 2, dated October 25, 1986, certificated in any category. Compliance required as indicated, unless previously accomplished.

To prevent displacement of the aileron mass balance side plate, and possible control surface interference, accomplish the following:

A. Within 6 months after the effective date of this AD, perform a dye penetrant inspection of the side plate of the aileron mass balance assembly for cracking of the attachment lugs, in accordance with BAe Service Bulletin 57-66, Revision 2, dated October 25, 1986. Repeat the inspection at intervals not to exceed 2 years.

B. If cracks are detected, repair before further flight, in accordance with Repair Scheme 25WG/R143, issued with Service Bulletin 57-66, Revision 2, dated October 25, 1986.

C. Accomplishment of Repair Scheme 25WG/R143 constitutes terminating action for the repetitive inspections required by paragraph A., above.

D. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety and has the concurrence of an FAA Principal Maintenance Inspector, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.

E. 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 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, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

This amendment becomes effective April 25, 1988.