AD 86-16-06

86-16-06 BOEING: Amendment 39-5380. Applies to all Model 747 airplanes, certificated in any category, listed in Boeing Alert Service Bulletin 747-25A2696, Revision 1, dated January 31, 1986, that are equipped with the cool gas generator inflation systems. To ensure that the escape slide inflation system operates properly, accomplish the following, unless already accomplished:

A. Within three months after the effective date of this AD, inspect the escape slide inflation system to verify the installation of acceptable self-locking nuts and replace defective nuts, if necessary, in accordance with Boeing Alert Service Bulletin 747-25A2696, Revision 2, dated May 2, 1986, or later FAA-approved revisions.

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 21.197 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 the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124-2207. This document 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 September 10, 1986.