1AD/PA-31/129 Amdt 1 - Elevator Structure

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AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/PA-31/129 and issues the following AD under subregulation 39.1 (1) of CAR 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.

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Piper PA-31 Series Aeroplanes

AD/PA-31/129

Amdt 1

Elevator Structure 12/2001 DM

Applicability: Aircraft applicable to Requirements 1, 2, or 3 as specified below: For Requirement 1:

Model PA-31 and PA-31-300, serial numbers 31-2 through 31-694 For Requirement 2:

Models Serial numbers

PA-31P 31P-1 through 31P-7730012

PA-31T 31T-7400002 through 31T-8120104

PA-31T1 31T-7804001 through 31T-8304003 and 31T-1104004 through 31T-1104017

PA-31T2 31T-8166001 through 31T-8166076 and 31T-1166001 through 31T-1166008

PA-31T3 31T-8275001 through 31T-8475001 and 31T-5575001

For Requirement 3:

Model PA-31, PA-31-300, and PA-31-325, serial numbers 31-2 through 31-8312019 Model PA-31-350, serial numbers 31-5001 through 31-8452021 and 31-8253001

through 31-8553002.

PA-31P-350, serial numbers 31P-8414001 through 31P-8414050.

Requirement: 1.a. Inspect the rudder and elevator spars and elevator butt ribs for cracks in accordance with the instructions contained in Piper Service Bulletin (SB) No. 323, dated 21 September 1970.

1.b. If cracks are found in the rudder or elevator structure during any inspection, replace the cracked part, and either continue to re-inspect in accordance with SB No. 323, or incorporate Elevator and Rudder Hinge Replacement Kit No. 760- 465 in accordance with the instructions contained in the kit, revised 25 October 1989.

1.c. Incorporate Elevator and Rudder Hinge Replacement Kit No. 760-465 in accordance with the instructions contained in the kit, revised 25 October 1989.

2.a. Modify the elevator trim tab system and elevator control tube in accordance with the instructions contained in Elevator Trim System Modification Kit No. 760-989, as referenced in Piper SB No. 477A, dated 3 November 1975.