91-14-10 BRITISH AEROSPACE: Amendment 39-7051. Docket No. 91-NM-36-AD.
Applicability: Model BAe 146-300A series airplanes; Serial numbers E3118 through E3161, E3163, E3165, and E3169; certificated in any category.
Compliance: Required within 180 days after the effective date of this AD, unless previously accomplished.
To prevent the stall identification (stick push) from occurring at a higher angle of attack than the angle called for in the design specification which could adversely affect the controllability of the airplane, accomplish the following:
A. Install two signal summing units, Part Number C81606-6, in accordance with British Aerospace Service Bulletin 27-114-01028B, dated September 26, 1990.
B. An alternative method 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, Transport Airplane Directorate.
NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.
C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.
D. The installation requirements shall be done in accordance with British Aerospace Service Bulletin 27-114-01028B, dated September 26, 1990. This incorporation by reference 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, D.C. 20041. Copies may be inspected at the FAA, Transport Airplane Directorate, Renton, Washington; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C.
This amendment (39-7051, AD 91-14-10)becomes effective on August 6, 1991.