COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
De Havilland DHC-1 (Chipmunk) Series Aeroplanes
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/DHC-1/28 Amdt 7 and issues the following 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 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.
AD/DHC-1/28
Amdt 8
Undercarriage Mounting Casting 3/2000
Applicability: All English designed Chipmunk DHC-1 aircraft engaged in aerial work or charter operations.
Requirement: Inspect in accordance with British Aerospace Technical News Sheet CT (C1) No. 165 Issue 6.
Note: UK CAA AD 2807 refers.
Compliance: At the inspection intervals and limits specified in the Requirement document.
This Amendment becomes effective on 23 March 2000.
Background: Inspection of wings returned for overhaul and repair revealed cracking of the undercarriage mounting casting.
Amendment 4 relaxed inspection intervals, and introduced suggested examination techniques.
Amendment 5 reflected a variation to re-inspection intervals.
Amendment 6 amended the mounting casting top and bottom flange inspection limits.
Amendment 7 corrected administrative problems which occurred during processing of Amendment 6.
Amendment 8 is issued in response to the latest issue of the Requirement document which reflects the need to defuel the aircraft prior to the inspection.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Amendment 7 of this directive became effective on 2 December 1999. Amendment 6 of this directive became effective on 7 October 1999.
Amendment 5 of this Directive became effective on 23 May 1996.
The original issue of this Airworthiness Directive became effective on 1 April 1979.
Eugene Paul Holzapfel
Delegate of the Civil Aviation Safety Authority 10 February 2000
The above AD is notified in the Commonwealth of Australia Gazette on 23 February 2000.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Parliament, are designed to ensure the safety and regulation of civil aviation within Australia. These regulations are overseen by the Civil Aviation Safety Authority (CASA), which is tasked with maintaining and improving aviation safety standards. A specific legislative instrument under these regulations, F2006B09008, addresses issues concerning the airworthiness of De Havilland DHC-1 (Chipmunk) series aeroplanes. This instrument aims to rectify identified safety concerns through the issuance of Airworthiness Directives (ADs), which mandate corrective actions to ensure the safe operation of affected aircraft. The latest amendment, AD/DHC-1/28 Amdt 8, issued on 3 March 2000, focuses on the inspection of the undercarriage mounting casting for all English-designed Chipmunk DHC-1 aircraft involved in aerial work or charter operations. This directive follows the discovery of cracks in the undercarriage mounting casting during inspections and seeks to mitigate potential safety risks by requiring inspections in accordance with specified technical guidelines.
Scope and Application
The Civil Aviation Safety Authority (CASA) has issued Airworthiness Directive (AD) AD/DHC-1/28 Amdt 8 under subregulation 39.1 (1) of the Civil Aviation Regulations 1998. This AD applies specifically to all English designed Chipmunk DHC-1 aircraft that are involved in aerial work or charter operations. The directive mandates an inspection of the undercarriage mounting casting to address an identified unsafe condition, as detailed in the requirement section, which references British Aerospace Technical News Sheet CT (C1) No. 165 Issue 6. Compliance with the AD requires adherence to the specified inspection intervals and limits outlined in the requirement document, and the amendment becomes effective on 23 March 2000. This directive is an amendment to previous versions, which have progressively updated inspection intervals and techniques to ensure safety in light of ongoing inspections and identified issues. The AD is notified in the Commonwealth of Australia Gazette, ensuring its reach and applicability are communicated within the relevant jurisdictions.
Key Provisions
The Civil Aviation Regulations 1998, particularly Part 39 - 105, outlines specific Airworthiness Directives (AD) related to the maintenance and safety of certain aircraft. In this case, AD/DHC-1/28 Amdt 8 pertains to the De Havilland DHC-1 (Chipmunk) series aeroplanes, specifically targeting English designed Chipmunk DHC-1 aircraft used in aerial work or charter operations. According to section 39.1(1) of the CAR 1998, the Civil Aviation Safety Authority (CASA) has issued this AD to address an identified unsafe condition related to the undercarriage mounting casting. The requirement for this AD, as stipulated in the directive, mandates a detailed inspection of the undercarriage mounting casting in accordance with British Aerospace Technical News Sheet CT (C1) No. 165 Issue 6. This inspection must be carried out at the intervals and limits specified in the referenced requirement document. The directive became effective on 23 March 2000, and it supersedes previous amendments, with the latest change addressing the need to defuel the aircraft prior to inspection.
The AD imposes specific obligations on the operators and owners of the affected aircraft. They must ensure that the inspection of the undercarriage mounting casting is conducted in strict accordance with the outlined technical news sheet and at the specified intervals. This obligation extends to maintaining records of the inspections, ensuring that any identified issues are addressed promptly and effectively. The compliance with this directive is essential to maintain the airworthiness of the aircraft and to ensure the safety of all persons on board and on the ground.
Failure to comply with the requirements set forth in this Airworthiness Directive may result in significant legal consequences. Under section 90 of the Civil Aviation Act 1988, non-compliance can lead to enforcement actions by CASA. The potential penalties for breaching these regulations include fines and, in severe cases, the grounding of the aircraft until the required inspections and repairs are completed. The exact penalties are determined based on the severity of the breach and the impact on aviation safety. It is critical for operators and owners to adhere to these directives to avoid any legal repercussions and to uphold the high safety standards required in civil aviation.