83-24-07 BRITISH AEROSPACE: Amendment 39-4778. Applies to Model BAC 1-11 200 and 400 series airplanes, certificated in all categories. Compliance is required as indicated. To prevent possible loss of roll control, accomplish the following within the next 30 days after the effective date of this AD, unless previously accomplished:
A. Modify the aileron stub fairing installation attached to the outboard side of the fixed flap track center fairing at rib 15, left and right wing, in accordance with the Accomplishment Instructions of British Aerospace BAC 1-11 Service Bulletin 57-PM5856, Revision 1, dated March 30, 1983.
B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, 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.
This amendment becomes effective December 20, 1983.