87-04-18 SHORT BROTHERS PLC: Amendment 39-5551. Applies to Model SD3-30 airplanes, Serial Numbers SH3002 through SH3116 inclusive, certificated in any category. Compliance is required within 90 days after the effective date of this AD, unless previously accomplished:
A. To prevent fuel entering into the main cabin, seal certain areas of the fuselage top skin in accordance with Short Brothers PLC, Service Bulletin SD330-53-58, dated January 1986, or Revision 1, dated May 1986.
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, Standardization Branch, ANM-113, 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 the modification required by this AD.
All persons affected by this directive who have not already received the appropriate servicedocument from the manufacturer may obtain copies upon request to Short Brothers PLC, 2011 Crystal Drive, Suite 713, Arlington, Virginia 22202-3702. 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 March 18, 1987.