AD/GAF-N22/58 Amdt 5 - Horizontal Stabiliser (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

GAF N22 and N24 Series Aeroplanes

AD/GAF-N22/58 Amdt 5

Applicability: All models.

Horizontal Stabiliser 8/96

Requirement: 1. Remove modification N568 machined braces, P/N 1/N-30-250, and inspect the horizontal stabiliser centre section structure, in accordance with ASTA Nomad Service Bulletin ANMD-55-26, Revision 8, Accomplishment Instructions, Part 1.

2. Reinforce the dorsal fin & the rear fuselage structure, in accordance with ASTA Nomad SB ANMD-55-26, Revision 8, Accomplishment Instructions, Part 2.

3. Rework the horizontal stabiliser structure and install modification N663 and N768, in accordance with ASTA Nomad Service Bulletin ANMD-55-26, Revision 8, Accomplishment Instructions, Part 3 or 4 as applicable.

Note: For the purposes of this AD, installation of modifications N663 and N768 does not 'zero time' the tailplane.

4. Retire the complete horizontal stabiliser structure from service, including trim tab assemblies.

Compliance: Accomplish Requirements 1, 2 and 3 before further flight, unless previously accomplished, except that changes introduced by Revision 8 of SB ANMD-55-26, including new lockwire requirements, may be accomplished not later than the next issue of a Maintenance Release after 18 July 1996.

For tailplanes with the original main spars, or that were resparred at less than 5000 hours tailplane time in service, retire the horizontal stabiliser from service before exceeding 15000 hours spar time in service; or

For tailplanes resparred after 5000 hours tailplane time in service, retire the horizontal stabiliser from service before 20,000 hours tailplane time in service.