AD/AT-6/2 Amdt 1 - Horizontal Stabliser Rear Spar Connector Fittings (Cth)

AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/AT-6/2 and issues the following AD under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Rockwell (N American) & Autair (Noorduyn) AT-6, BC-1A, SNJ, T-6G, Harvard, & AT-16 Series Aeroplanes AD/AT-6/2 Amdt 1 Horizontal Stabliser Rear 7/2009 Spar Connector Fittings

Applicability: All Model Harvard 2 and Harvard 4 aircraft and Model AT-6D (SNJ-5), AT-6F (SNJ-6), SNJ-7 and T-6G aircraft; equipped with single piece design horizontal stabiliser rear spar connector fittings, part number 7721021 (4 fittings per spar).

This Directive is not applicable to aircraft equipped with two piece design connector fittings part numbers 77210213 and 77210214 (8 fittings per spar). Requirement: Remove the fuselage to vertical stabiliser fairing assembly and the rear fairing assemblies at the horizontal stabiliser.

Remove the ¼-inch bolts which attach the upper and lower spar connection fittings part number 7721021, of the rear spar assembly.

Remove the four connection fittings from the spar, remove the paint from the connection fittings, and check for cracks using dye penetrant inspection method. Replace any cracked fittings with serviceable fittings and repaint the fittings found to be crack free.