AD 88-01-03

88-01-03 BOEING: Amendment 39-5810. Applies to Model 757 series airplanes equipped with Rolls Royce RB 211-535C or -535E4 engines, specified in Boeing Alert Service Bulletin 757-71A0026, Revision 1, dated September 24, 1987, certificated in any category. Compliance required within one year after the effective date of this AD, unless previously accomplished.

To minimize the potential for total thrust loss in both engines due to a lightning strike, accomplish the following:

A. Modify engine electrical and electronic control unit wiring in accordance with Boeing Alert Service Bulletin 757-71A0026, Revision 1, dated September 24, 1987, or later FAA-approved revision.

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, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197and 21.199 to operate airplanes to a base for the accomplishment of the 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 the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington, 98124. These documents may be examined at the FAA Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way south, Seattle, Washington.

This amendment becomes effective February 16, 1988.