AD 91-09-02

91-09-02 BOEING: Amendment 39-6983. Docket No. 90-NM-269-AD.

Applicability: Model 757 series airplanes, equipped with Rolls Royce RB211-535 engines; as listed in Boeing Service Bulletin 757-76-0008, dated March 22, 1990; certificated in any category.

Compliance: Required within the next 3,000 hours time-in-service after the effective date of this AD, unless previously accomplished.

To prevent chafing of the thrust control cable assemblies, wire bundle clamps, and wire bundles, accomplish the following:

A. Accomplish the following in accordance with Boeing Service Bulletin 757-76- 0008, dated March 22, 1990:

1. Inspect thrust control cable assemblies for damage, and replace any damaged thrust control cable assemblies prior to further flight;

2. Inspect the wire bundles for evidence of chafing, and repair any chafed wire bundles prior to further flight; and

3. Modify the wire bundles.

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, Seattle Aircraft Certification Office (ACO), 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, Seattle ACO.

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.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington.

This amendment (39-6983, AD 91-09-02) becomes effective on May 28, 1991.