AD 89-04-08

89-04-08 BRITISH AEROSPACE: Amendment 39-6142.

Applicability: British Aerospace BAe Model 146 100A series airplanes, serial numbers up to and including E1101; and 200A series airplanes, serial numbers up to and including E2100; certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent a hazardous trim system configuration, accomplish the following:

A. Within 60 days or 600 landings after the effective date of this AD, whichever occurs first, inspect the right and left aileron and elevator trim screwjack assemblies for the presence of a circlip, in accordance with BAe Inspection Service Bulletin 27-74, dated April 8, 1988. If the circlip is missing, prior to further flight, install a circlip in accordance with the service bulletin.

B. 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 may add any comments 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 for the accomplishment of inspection and/or modification 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, Librarian for Service Bulletins, 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 (39-6142, AD 89-04-08) becomes effective March 28, 1989.