AD/CL-600/61 - Main Landing Gear Side-Brace Fitting Shaft

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


AIRWORTHINESS DIRECTIVE


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 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.

 

Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes

 

AD/CL-600/61 Main Landing Gear Side-Brace Fitting Shaft


13/2002

 

Applicability: Model CL-600-2B16 aircraft, serial numbers 5301 through 5550.

 

Requirement: Action in accordance with Bombardier Alert Service Bulletin A604-32-018, Revision 1, dated 22 February 2002.

 

Note: Transport Canada AD CF-2002-43 refers.

 

Compliance: For Paragraph 2.B. Part A of Requirement document: Within 3 months after 26 December 2002.

 

For Paragraph 2.C. Part B of Requirement document: Within 5 months after 26 December 2002.

 

For Paragraph 2.D. Part C of Requirement document: Within 5 months after 26 December 2002.

 

This Airworthiness Directive becomes effective on 26 December 2002.

 

Background: Transport Canada received two reports of fractures of the main landing gear side- brace fitting shafts on CL-604 aircraft. The fractures were caused by corrosion on the forward side of the side-brace fitting shafts. Although the fractured shafts did not become dislodged in either of the cases reported, breakage of a shaft could potentially result in collapse of a landing gear.


David Alan Villiers

Delegate of the Civil Aviation Safety Authority 8 November 2002

 

 

 


The above AD is notified in the Commonwealth of Australia Gazette on 4 December 2002.

 

 


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Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, include Airworthiness Directives (ADs) issued by the Civil Aviation Safety Authority (CASA). These directives are enacted by the Australian government to ensure the safety of civil aviation. One such AD, AD/CL-600/61, pertains to the Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes and was introduced in response to reports of main landing gear side-brace fitting shaft fractures caused by corrosion. This AD was issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 and aims to address the identified unsafe condition by mandating specific corrective actions in line with the instructions provided by Bombardier Alert Service Bulletin A604-32-018, Revision 1, dated 22 February 2002. The directive was published in the Commonwealth of Australia Gazette on 4 December 2002, with the requirement that certain actions be taken within specified timeframes to mitigate the risk of potential landing gear collapse.

Scope and Application

The Airworthiness Directive AD/CL-600/61 applies specifically to Bombardier (Canadair) CL-600 (Challenger) Series aeroplanes, with a particular focus on aircraft of the CL-600-2B16 model, serial numbers 5301 through 5550. This directive is issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 by the Civil Aviation Safety Authority (CASA) and mandates that the action outlined in the requirement section be undertaken to address the identified unsafe condition concerning the main landing gear side-brace fitting shaft. The requirement necessitates compliance with Bombardier Alert Service Bulletin A604-32-018, Revision 1, dated 22 February 2002. The directive is effective from 26 December 2002, with specific compliance timelines set for different parts of the requirement document, ranging from three to five months after the directive's effective date. This AD extends to the Commonwealth of Australia and is intended to ensure the safety of the specified aircraft within its jurisdiction.

Key Provisions

The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998 (CAR 1998) pertains to the Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes, specifically model CL-600-2B16 aircraft with serial numbers 5301 through 5550. The directive addresses an issue with the main landing gear side-brace fitting shaft, identified as a potential safety risk due to corrosion-induced fractures. The directive requires the action stipulated in Bombardier Alert Service Bulletin A604-32-018, Revision 1, dated 22 February 2002, to be implemented to rectify the unsafe condition. Compliance timelines are specified for different parts of the requirement document, with deadlines ranging from 3 months to 5 months after 26 December 2002. The directive became effective on 26 December 2002. Entities governed by this AD must adhere to the specific actions outlined in the Bombardier Alert Service Bulletin, ensuring that the identified issue with the landing gear side-brace fitting shaft is resolved. This involves following the detailed instructions provided in the bulletin, which may include inspection, maintenance, or replacement of the affected parts. The mandate applies strictly to the specified model and serial number range of aircraft, making it imperative for operators of these aircraft to implement the corrective measures within the prescribed timeframes. Failure to comply with the AD could lead to the aircraft being deemed non-airworthy, potentially resulting in grounding and further regulatory actions. Non-compliance with the AD could result in serious consequences, including enforcement actions by CASA. The potential civil and criminal penalties for non-compliance are not explicitly stated in the AD but could encompass fines, penalties, and other sanctions under the Civil Aviation Act 1988 and the Civil Aviation Regulations 1998. These could include substantial financial penalties and legal action, as well as the possibility of operational restrictions or the revocation of airworthiness certificates. Given the potential safety implications, operators are strongly advised to adhere strictly to the requirements of this AD to ensure continued compliance with aviation safety standards.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.