AD 87-26-07

87-26-07 BRITISH AEROSPACE: Amendment 39-5807. Applies to Model H.S. 748 series airplanes, as listed in British Aerospace Service Bulletin 52/127, dated May 29, 1985, certificated in any category. compliance required within 5 months after the effective date of this AD, unless previously accomplished:

To prevent the loss of the overwing escape hatch during flight, due to improper locking, accomplish the following:

A. Replace the escape hatch locking mechanism with P/N 10D14062 locking mechanism assembly, in accordance with the instructions in British Aerospace Service Bulletin No. 52/127, dated May 29, 1985.

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.

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.

All persons affected by this directive who have not already received the appropriate service document from the manufacturer may obtain copies upon request to British Aerospace, Inc., P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041. This document 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 February 1, 1988.