AD/AT/30 - Rudder and Vertical Fin (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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.

Airtractor AT-300, 400 and 500 Series Aeroplanes AD/AT/30 Rudder and Vertical Fin 13/2008

Applicability: Model AT-402, AT-402A, and AT-402B aircraft, serial numbers 0694 through 1176. Requirement: 1. Visually inspect the rudder and vertical fin hinge attachment for loose fasteners, and inspect the rudder or vertical fin skins, spars, hinges, and brackets for cracks and/or corrosion in accordance with Snow Engineering Co. Service Letter No. 247, Revised 2 June 2008, or later FAA approved revision.

If any damage is detected during any Requirement 1 inspection, before further flight, replace any damaged parts with new parts, and accomplish the installation of the external doubler at the upper rudder hinge as specified in Requirement 2.

2. Accomplish the installation of the external doubler at the upper rudder hinge in accordance with Snow Engineering Co. Service Letter No. 247, Revised 2 June 2008, or later FAA approved revision, and Snow Engineering Co. Process Specification Number 145, dated 6 December 1991.

The installation of the external doubler at the upper rudder hinge terminates the Requirement 1 repetitive inspections.