AD/PA-23/12 Amdt 2 - Empennage - Inspection (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/PA-23/12 Amdt 1 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.

Piper PA-23 (Apache and Aztec) Series Aeroplanes AD/PA-23/12 Amdt 2 Empennage - Inspection 9/2008

Applicability: Models PA-23 and PA-23-160 with S/Nos. 23-1 to 23-1267. Requirement: 1. Remove the tail cone, covers and fairings, and visually inspect for cracks in the castings listed below. Part Casting Part No. Forging Part No. Elevator Torque Tube Bracket 17033-00 & 17033-01 19407-00 Front Stabiliser Attachment 17049-00 & 19253-00 19409-02 Rudder Torque Tube Horn 17060-00 19405-00 Elevator Torque Tube Horn 17066-00 19404-00 Rudder Torque Tube Bracket 17062-00 19408-00 Fin Attachment Bracket 17072-00 19406-00 or 19406-02

Note: All the forged parts listed have integral raised digit forging numbers. Therefore, absence of raised digits will serve to identify the part as a casting. 2. Remove from the aircraft all castings listed in Para. 1, clean thoroughly removing all paint, and inspect for cracks using an approved fluorescent or dye penetrant method. Prior to reinstallation of airworthy castings, clean thoroughly, and apply zinc chromate primer. Inspect and re-assemble in accordance with Piper SB No. 155B. Replace cracked castings with a replacement forged or cast part. Note 1: When any casting is replaced by its respective forging listed above, the repetitive inspections of Paras. 1 and 2 are no longer required for that part.