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-600/44 Power Transfer Contactors 10/2001
DM
Applicability: Model CL-600-2B19 ‘Regional Jet’ aeroplanes serial numbers 7003 through 7495, 7497 through 7502 and 7505 through 7507.
Requirement: 1. Determine, in accordance with the procedures in Bombardier Alert Service Bulletin (ASB) A601R-24-105 dated 4 July 2001 or Revision A dated 20 July 2001, if installed air driven generator (ADG) emergency hydraulic power transfer contactor K1XC, ADG emergency electrical power transfer contactor K2XD and AC essential power transfer contactor K3XD, all Part Number (P/N) H-A4A-039, have a manufacturing date code of 0011 through 0050. (The power transfer contactors with manufacturing date code 0011 through 0050 are hereafter referred to as ‘suspect contactors’.)
2. For aircraft, determined in accordance with Requirement 1, to have a suspect K1XC and/or a K2XD contactor installed, dispatch with an inoperative Integrated Drive Generator (IDG) or Auxiliary Power Unit (APU) generator is prohibited until such time as the suspect contactor(s) is/are replaced as detailed in Requirement 3 and 4 of this Directive.
3. Replace suspect K1XC contactors in accordance with ASB A601R-24-105 or A601R-24-105 Rev A.
4. Replace suspect K2XD and K3XD contactors in accordance with the above- mentioned ASB.
5. Power transfer contactors K1XC, K2XD and K3XD P/N H-A4A-039 that have a manufacturing date code of 0011 through 0050, may not be installed in any aircraft.
Note: Transport Canada AD CF-2001-27 refers.
Compliance: For Requirement 1 - Within 14 calendar days after the effective date of this Directive.
For Requirement 2 - Immediately with effect from the date that the Requirement 1 determination was made.
Bombardier (Canadair)
CL-600 (Challenger) Series Aeroplanes
AD/CL-600/44 (Continued)
For Requirement 3 - Within 500 hours time in service (TIS) after the effective date of this Directive.
For Requirement 4 - Within 1000 hours TIS after the effective date of this Directive. For Requirement 5 - As of the effective date of this Directive.
This Airworthiness Directive becomes effective on 15 August 2001.
Background: Transport Canada has advised that power transfer contactors K1XC, K2XD and K3XD, manufactured between 12 March 2000 and 10 December 2000, may have defective moving blade assemblies that could result in premature failure of these contactors.
This Directive requires an inspection to determine whether the ‘suspect contactors’ are installed and, if so, restricts the despatch of the aircraft with an inoperative IDG or APU generator. The Directive also requires the eventual replacement of ‘suspect contactors’.
Eugene Paul Holzapfel
Delegate of the Civil Aviation Safety Authority 9 August 2001
The above AD is notified in the Commonwealth of Australia Gazette on 15 August 2001.
Overview
The Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 (CAR 1998) by the Civil Aviation Safety Authority (CASA) addresses potential safety issues associated with the Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes, specifically those with certain power transfer contactors. Enacted on 15 August 2001, the AD targets Model CL-600-2B19 ‘Regional Jet’ aeroplanes with serial numbers ranging from 7003 to 7495, 7497 to 7502, and 7505 to 7507, which have been identified as having suspect contactors manufactured between 12 March 2000 and 10 December 2000. The directive aims to ensure these aeroplanes do not pose a safety risk by requiring inspections and, if necessary, the replacement of suspect contactors. The policy objective is to prevent the premature failure of these contactors, which could compromise the aircraft's safety.
Scope and Application
The Airworthiness Directive (AD) issued under subregulation 39.1(1) of the Civil Aviation Regulations 1998 applies specifically to Bombardier (Canadair) CL-600 Series aeroplanes, namely the CL-600-2B19 ‘Regional Jet’ models with serial numbers ranging from 7003 through 7495, 7497 through 7502, and 7505 through 7507. This AD is intended to address a safety concern related to power transfer contactors, which could lead to premature failure if installed. The directive mandates that specific actions be taken to mitigate this risk. These actions include determining if the installed contactors have specific manufacturing date codes, prohibiting the dispatch of aircraft with inoperative Integrated Drive Generators (IDG) or Auxiliary Power Unit (APU) generators if suspect contactors are present, and requiring the replacement of these contactors within specified timeframes. This AD is effective from 15 August 2001 and applies nationally across Australia, as notified in the Commonwealth of Australia Gazette on the same date. There are no stated exclusions or exemptions within this AD, and compliance is mandatory for the specified aircraft. The AD extends its application through subordinate instruments, such as the procedures outlined in Bombardier Alert Service Bulletins A601R-24-105 and its revision, which detail the specific actions to be taken for the replacement of suspect contactors.
Key Provisions
The Airworthiness Directive (AD) issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 (CAR 1998) pertains to specific Bombardier (Canadair) CL-600 series aeroplanes. It mandates actions necessary to correct unsafe conditions associated with certain power transfer contactors. The AD applies to CL-600-2B19 'Regional Jet' aeroplanes with serial numbers 7003 through 7495, 7497 through 7502, and 7505 through 7507. It requires operators to determine whether the installed contactors K1XC, K2XD, and K3XD, part number H-A4A-039, have a manufacturing date code of 0011 through 0050 (s1). If these 'suspect contactors' are present, the AD prohibits the dispatch of the aircraft with an inoperative Integrated Drive Generator (IDG) or Auxiliary Power Unit (APU) generator until the contactors are replaced (s2). The replacement of suspect K1XC contactors must be carried out in accordance with Bombardier Alert Service Bulletin (ASB) A601R-24-105 or its revision (s3). The suspect K2XD and K3XD contactors should also be replaced following the same procedures (s4). Furthermore, it is prohibited to install these suspect contactors in any aircraft (s5).
The obligations imposed by the AD include a thorough inspection of the aircraft to identify the presence of suspect contactors, as per the specified procedures. Operators must ensure that any aircraft with these suspect contactors do not operate with an inoperative IDG or APU generator until the specified corrective actions are taken. This involves replacing the suspect contactors within the stipulated timeframes: within 500 hours of time in service (TIS) for the K1XC contactors and within 1000 hours TIS for the K2XD and K3XD contactors. Additionally, the AD mandates that these suspect contactors should not be installed in any aircraft at all.
Failure to comply with the AD's requirements can lead to serious consequences. Non-compliance with the AD could result in significant safety risks, including the potential for premature failure of the power transfer contactors, which could compromise the aircraft's safety. Although the AD does not explicitly state penalties, non-compliance could lead to enforcement actions by the Civil Aviation Safety Authority (CASA), potentially including fines, suspension of airworthiness certificates, or other regulatory sanctions. The severity of the penalties would depend on the extent of non-compliance and the resultant safety risks.