Commonwealth legislation

AD/TB20/43 - Pitch Trim Actuator Seals

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This Airworthiness Directive requires owners/operators of specified Aerospatiale (Socata) TB20 and TB21 aeroplanes (listed serial numbers) to inspect and, if necessary, replace the pitch trim actuator tightness seals in accordance with EADS SOCATA Service Bulletin TB No 10-135. The measure targets a safety risk: non-conforming seals could allow icing inside the actuator. Compliance is at the next 100‑hour inspection or by 31 December 2003.

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Current sections

Direct links to the current provisions in AD/TB20/43 - Pitch Trim Actuator Seals.

AIRWORTHINESS DIRECTIVE

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For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (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/TB20/43 Pitch Trim Actuator Seals 11/

AD/TB20/43 Pitch Trim Actuator Seals 11/2003

Applicability: TB 20 and TB 21 aircraft Serial Number (S/N) 2042, 2050, 2056 to 2118, 2123 to

2125 and 2144.

Requirement: Check and replace the pitch trim actuator tightness seals in accordance with EADS SOCATA Service Bulletin (S/B) TB No 10-135 dated April 2003.

Note: DGAC AD 2003-286(A) refers.

Compliance: At the next 100 hourly inspection or prior to 31 December 2003.

This Airworthiness Directive becomes effective on 30 October 2003.

Background: Non-conforming tightness seals fitted to the pitch trim actuator could lead to icing inside the actuator.

Signature of Jim Coyne Delegate of the Civil Aviation Safety Authority

Jim Coyne

Delegate of the Civil Aviation Safety Authority 19 September 2003

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Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes

AD/TB20/43 Pitch Trim Actuator Seals 11/ AD/TB20/43 Pitch Trim Actuator Seals 11/2003

AD/TB20/43 Pitch Trim Actuator Seals 11/2003

Applicability: TB 20 and TB 21 aircraft Serial Number (S/N) 2042, 2050, 2056 to 2118, 2123 to

2125 and 2144.

Requirement: Check and replace the pitch trim actuator tightness seals in accordance with EADS SOCATA Service Bulletin (S/B) TB No 10-135 dated April 2003.

Note: DGAC AD 2003-286(A) refers.

Compliance: At the next 100 hourly inspection or prior to 31 December 2003.

This Airworthiness Directive becomes effective on 30 October 2003.

Background: Non-conforming tightness seals fitted to the pitch trim actuator could lead to icing inside the actuator.

Jim Coyne

Delegate of the Civil Aviation Safety Authority 19 September 2003