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-600/56 APU Cooling Air Exhaust 7/2002
Applicability: CL-600-2B19 series 100/200 aircraft serial numbers 7003 through 7067 inclusive, and serial numbers 7069 through 7254 inclusive.
Requirement: Modify the APU cooling air exhaust in accordance with Bombardier SB 601R-49- 015.
Note: Canadian AD CF-2002-21 refers.
Compliance: Unless previously accomplished; within 2000 flight hours from the effective date of this Directive.
This Airworthiness Directive becomes effective on 11 July 2002.
Background: Incomplete drainage of the APU enc losure has been reported when operating on the ground. This can be a potential fire hazard. Negative pressure may contribute to this problem. Reworking of the APU enclosure will prevent negative pressure from developing and subsequently reduce drainage problems from the enclosure.
James Coyne
Delegate of the Civil Aviation Safety Authority 23 May 2002
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The above AD is notified in the Commonwealth of Australia Gazette on 19 June 2002.
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Overview
The Airworthiness Directive issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 addresses an issue with the Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes. The directive, AD/CL-600/56, was enacted to rectify the problem of incomplete drainage of the Auxiliary Power Unit (APU) enclosure when operating on the ground, which poses a potential fire hazard due to negative pressure. The directive requires a modification to the APU cooling air exhaust in line with Bombardier Service Bulletin 601R-49-015, referencing Canadian AD CF-2002-21. This modification is to prevent negative pressure from developing and subsequently reduce drainage problems from the enclosure. The AD applies to specific CL-600-2B19 series 100/200 aircraft serial numbers and must be undertaken unless previously accomplished, within 2000 flight hours from the effective date of the directive, which was set to be 11 July 2002. The directive was notified in the Commonwealth of Australia Gazette on 19 June 2002.
Scope and Application
The Airworthiness Directive F2006B08619 applies specifically to Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes, more precisely the CL-600-2B19 series 100/200 aircraft with serial numbers ranging from 7003 through 7067 inclusive, and 7069 through 7254 inclusive. The directive mandates the modification of the APU cooling air exhaust in compliance with Bombardier Service Bulletin 601R-49-015, addressing the issue of incomplete drainage of the APU enclosure when operating on the ground, which poses a potential fire hazard due to negative pressure. This directive, issued by the Civil Aviation Safety Authority (CASA) delegate, becomes effective on 11 July 2002, and requires the specified modifications to be completed within 2000 flight hours from this date unless already accomplished. The directive's scope is limited to the identified serial numbers of the CL-600 series aircraft and applies nationally across the Commonwealth of Australia, with notifications published in the Commonwealth of Australia Gazette on 19 June 2002.
Key Provisions
This Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 mandates specific actions to address safety issues identified in Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes. The AD, identified as AD/CL-600/56, applies to CL-600-2B19 series 100/200 aircraft with specific serial numbers ranging from 7003 through 7067 and 7069 through 7254 inclusive. The directive requires that the APU (Auxiliary Power Unit) cooling air exhaust be modified according to Bombardier Service Bulletin 601R-49-015. This requirement is crucial as incomplete drainage of the APU enclosure has been reported, potentially leading to fire hazards due to negative pressure. The directive references Canadian AD CF-2002-21 for additional context.
The obligations imposed by this AD are clear and direct. Aircraft operators must ensure that the APU cooling air exhaust is modified as specified in Bombardier SB 601R-49-015. This action is necessary unless it has already been completed. Furthermore, the modification must be carried out within 2000 flight hours from the effective date of the AD, which is 11 July 2002. Compliance with this directive is mandatory for the specified aircraft to ensure airworthiness and safety.
Failure to comply with this Airworthiness Directive may lead to serious consequences. The directive does not specify particular offences, penalties, or legal consequences in the provided text, but non-compliance generally results in the aircraft being deemed non-airworthy. This could lead to grounding of the aircraft, legal actions, and potential financial penalties imposed by the Civil Aviation Safety Authority (CASA). The specific penalties would depend on the extent of the non-compliance and any resultant incidents or accidents. However, the overarching principle is that non-compliance with ADs can have severe implications for aviation safety and regulatory compliance.