86-14-05 SHORT BROTHERS, LTD.: Amendment 39-5344. Applies to Model SD3-60 airplanes, serial numbers SH3601 through SH3676 inclusive, certificated in any category. Compliance is required within 90 days after the effective date of this AD. To maintain the structural integrity of the horizontal stabilizer, accomplish the following, unless previously accomplished:
1. Modify the horizontal stabilizer lower skin to spar attachment in accordance with Short Brothers, Ltd., Service Bulletin SD36-55-06, Revision 1, dated May 1985.
2. 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, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
3. 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 Shorts Aircraft, 1725 Jefferson Davis Highway, Suite 510, Arlington, Virginia 22202. 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 August 4, 1986.