AD 86-19-07

86-19-07 BOEING: Amendment 39-5402. Applies to all Model 767 airplanes, certificated in any category, listed in Boeing Service Bulletin 767-52-0042, Revision A, dated January 15, 1986. To prevent structural failure of the vertical fin in the event of a rupture of the aft pressure bulkhead, accomplish the following within 12 months after the effective date of this amendment, unless already accomplished:

A. Install a stronger replacement fin access door or reinforce the existing fin access door in accordance with Boeing Service Bulletin 767-52-0042, Revision A, dated January 15, 1986, or later FAA-approved revisions.

B. Alternate means of compliance or adjustment of compliance times, which provide an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

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 October 2, 1986.