Commonwealth legislation

AD/LJ60/4 - Spoiler Actuator

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What it does: Requires operators of specified Learjet 60 aeroplanes to visually check spoiler actuator serial numbers and replace any actuator listed in Learjet Service Bulletin S/B 60-27-21. (Applicability; Requirement)

Why it matters: CASA issued the AD to prevent spoiler actuator failure that can allow a spoiler panel to float and cause an uncommanded roll. Affected aircraft must comply before further flight; operators are responsible for the inspection and any replacement. (Compliance; Background)

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Current sections

Direct links to the current provisions in AD/LJ60/4 - Spoiler Actuator.

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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Learjet 60 Series Aeroplanes

AD/LJ60/4 Spoiler Actuator 4/2004

Applicability: Model 60 aeroplanes, serial numbers 60-029, 60-050, 60-120 through 60-139 inclusive.

Requirement: Determine by visual inspection the serial number of the installed spoiler actuators and if the serial number is listed in Learjet Service Bulletin Service Bulletin (S/B) 60-27- 21, dated 14 December 1998 replace the spoiler actuator in accordance with Learjet Service Bulletin S/B 60-27-21.

Note: FAA AD 99-23-19 Amdt 39-11415 refers.

Compliance: Unless previously accomplished before further flight.

This Airworthiness Directive becomes effective on 15 April 2004.

Background: Failure of a spoiler actuator has occurred which could result in the spoiler panel floating and inducing an uncommanded roll of the aeroplane.

Signature of James Coyne Delegate of the Civil Aviation Safety Authority

James Coyne

Delegate of the Civil Aviation Safety Authority 5 March 2004

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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

Learjet 60 Series Aeroplanes