80-12-12 GOVERNMENT AIRCRAFT FACTORIES (GAF): Amendment 39-3798. Applies to Models N22B (Serial Nos. N22B-5 and up) and N24A (Serial Nos. N24A-42 and up), certificated in all categories, which have had a replacement trim tab hinge, P/N MS 20001-4, installed.
Compliance required as indicated. To prevent loss of horizontal stabilizer trim tab, accomplish the following:
(a) Within the next 25 hours time in service after the effective date of this AD, unless already accomplished, visually inspect and modify, as necessary, the attachment of the right-hand and left-hand trim tab hinge to horizontal stabilizer in accordance with GAF Nomad Alert Service Bulletin ANMD-27-16, dated February 12, 1980, or an FAA-approved equivalent.
(b) Aircraft may be flown in accordance with FAR 21.197 and FAR 21.199 to a location where the modification can be accomplished.
(c) For purposes of complying with this AD, an FAA-approved equivalent must be approved by the Chief, Engineeringand Manufacturing District Office, FAA, Pacific-Asia Region, Honolulu, Hawaii.
NOTE: All persons affected by this directive who have not already received these documents from the manufacturer, may obtain copies upon request from the Government Aircraft Factories, 226 Lorimer Street, Port Melbourne, 3207 Vic., Australia. These documents may also be examined at the FAA, Engineering and Manufacturing District Office, 300 Ala Moana Blvd., Room 7321, Honolulu, Hawaii, 96850, and Rules Docket, Room 916, FAA, 800 Independence Avenue, S.W., Washington, D.C. 20591.
This amendment becomes effective June 26, 1980.