Commonwealth legislation

AD/TB20/41 Amdt 2 - Aileron and Elevator Control Gimbal Joint

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires owners/operators of Aerospatiale (Socata) TB20 and TB21 aeroplanes (unless they already have MOD 10-0209-27 or Service Bulletin No. BS 10-140) to inspect aileron and elevator control gimbal joints per Socata Service Bulletin TB No. 10-130 Rev 2, apply witness paint marks and repeat inspections at stated flight‑hour/month intervals. The rule is designed to detect and prevent shear‑pin failures that could lead to control loss; it imposes inspection scheduling and compliance costs on affected operators.

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Direct links to the current provisions in AD/TB20/41 Amdt 2 - Aileron and Elevator Control Gimbal Joint.

AD/TB20/41 Amdt 2 - Aileron and Elevator Control Gimbal Joint

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AIRWORTHINESS DIRECTIVE

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For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/TB20/41 Amdt 1 and issues the following AD under subregulation 39.1 (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.

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Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/41

Amdt 2

Aileron and Elevator Control Gimbal Joint 4/2004

Applicability: All Model TB20 and TB21 aircraft, without MOD 10-0209-27 or Service Bulletin No. BS 10-140 incorporated.

Requirement: Inspect the aileron and elevator control gimbal joints in accordance with Socata Service Bulletin TB No. 10-130 Revision 2, dated January 2004.

Note: DGAC AD F-2003-368 R2 refers.

Compliance: 1. Within 300 flight hours or 12 months, whichever occurs first; following delivery of the aircraft or replacement of an aileron or elevator gimbal joint;

Within 50 flight hours after 27 November 2003, whichever occurs later.

Repeat thereafter at intervals not to exceed 110 flight hours or 14 months, whichever occurs first.

The compliance times remain unchanged by this issue. This Amendment becomes effective on 15 April 2004.

Background: Failure of an aileron control gimbal joint shear pin could result in disconnection of the joint and consequent loss of control. This Directive requires inspection of the shear and joint pins for security and the application of paint witness marks to the pins.

Amendment 1 extended the inspection to elevator control gimbal joints and changed compliance times.

Amendment 2 is issued in response to a revision of the related DGAC AD, which changes aircraft applicability to exclude aircraft that have the terminating modification for the requirements of this Directive incorporated.

Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/41 Amdt 2 (continued)

The original issue of this Airworthiness Directive became effective on 11 July 2002.

Signature of David Villiers Delegate of the Civil Aviation Safety Authority

David Villiers

Delegate of the Civil Aviation Safety Authority 5 March 2004

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The above AD is notified in the Commonwealth of Australia Gazette on 24 March 2004.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/TB20/41 Amdt 2 - Aileron and Elevator Control Gimbal Joint

AIRWORTHINESS DIRECTIVE

Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/41

Amdt 2

Aileron and Elevator Control Gimbal Joint 4/2004

Applicability: All Model TB20 and TB21 aircraft, without MOD 10-0209-27 or Service Bulletin No. BS 10-140 incorporated.

Requirement: Inspect the aileron and elevator control gimbal joints in accordance with Socata Service Bulletin TB No. 10-130 Revision 2, dated January 2004.

Note: DGAC AD F-2003-368 R2 refers.

Compliance: 1. Within 300 flight hours or 12 months, whichever occurs first; following delivery of the aircraft or replacement of an aileron or elevator gimbal joint;

Within 50 flight hours after 27 November 2003, whichever occurs later.

Repeat thereafter at intervals not to exceed 110 flight hours or 14 months, whichever occurs first.

The compliance times remain unchanged by this issue. This Amendment becomes effective on 15 April 2004.

Amendment 1 extended the inspection to elevator control gimbal joints and changed compliance times.

Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/41 Amdt 2 (continued)