AD 89-08-09

89-08-09 BOEING: Amendment 39-6188. Applicability: Model 747 series airplanes, as listed in Boeing Alert Service Bulletin 747- 76A2074 dated January 19, 1989, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To eliminate the potential for uncommanded thrust operation due to engine control cable rupture, accomplish the following:

A. Within the next 30 days after the effective date of this AD, inspect control cable pulley bracket assemblies of the outboard engines located at Inboard Leading Edge Station (ILES) 1116 for proper installation and wear, and attach decals, in accordance with the accomplishment instructions of Boeing Alert Service Bulletin 747-76A2074, dated January 19, 1989.

B. If the installation is incorrect, prior to further flight, remove and install the pulley bracket in the correct position; and/or if parts are found to be worn, prior to further flight, replace worn parts; in accordance with theaccomplishment instructions of Boeing Service Bulletin 747-76A2074.

C. Report any incorrect pulley bracket installations detected during the inspections required by paragraph A., above, to the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, within seven days after the completion of the inspection.

D. 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.

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, Seattle Aircraft Certification Office.

E. 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 information from the manufacturer may obtain copies upon request to Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. This information may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington.

This amendment (39-6188, AD 89-08-09) becomes effective on April 24, 1989.