COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace BAe 3100 (Jetstream) Series Aeroplanes
AD/JETSTREAM/79 Main Landing Gear Brake Unit 10/98 DM
Applicability: Jetstream Series 3100 and 3200 aircraft as detailed in the requirement document. Requirement: Action in accordance with British Aerospace Regional Aircraft Alert Service Bulletin
32-A-JA980540.
Note: UK CAA AD 003-07-98 refers.
Compliance: Unless already accomplished, action in accordance with Part 1 and Part 2 of the Requirement document before 31 July 1998.
This airworthiness directive becomes effective on 22 July 1998.
Background: An incident has occurred where a brake unit heat pack was found to be totally worn when the indicator pins showed 0.1 inches of wear remaining. This directive requires a check of the wear remaining length indicated by the wear indicator pins and inspection to determine that the indicator pins are set correctly. There is a possibility that a fully worn heat pack in a brake unit may not be indicated as such by the indicator pins if not set correctly, which is a potentially unsafe condition.
Overview
The Civil Aviation Regulations 1998, specifically PART 39 - 105, addresses safety concerns and compliance requirements for airworthiness directives, including the British Aerospace BAe 3100 (Jetstream) Series Aeroplanes. Enacted by the Commonwealth of Australia, this legislative instrument aims to ensure that aircraft meet necessary safety standards to prevent incidents such as those involving the main landing gear brake units. The policy objective is to mitigate risks associated with potential malfunctions in critical components like brake units, thereby enhancing the overall safety of civil aviation operations. This directive mandates compliance with specific actions outlined in the British Aerospace Regional Aircraft Alert Service Bulletin, ensuring that any discrepancies in wear indicators are identified and rectified to maintain operational safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to Jetstream Series 3100 and 3200 aircraft. This legislative instrument mandates compliance with British Aerospace Regional Aircraft Alert Service Bulletin 32-A-JA980540, which pertains to the main landing gear brake unit of these aircraft. The directive requires adherence to the actions outlined in Part 1 and Part 2 of the requirement document before 31 July 1998, with the directive becoming effective on 22 July 1998. The directive responds to an incident where a brake unit heat pack was found to be fully worn despite the indicator pins showing 0.1 inches of wear remaining, highlighting a potential safety risk if the indicator pins are not set correctly. The requirement ensures that the wear remaining length indicated by the wear indicator pins is checked and inspected to confirm that the indicator pins are set correctly, thereby preventing unsafe conditions. This regulation applies to the Commonwealth of Australia and extends its jurisdictional reach nationally, ensuring uniform compliance across all relevant aircraft within the specified series.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, include an airworthiness directive for the British Aerospace BAe 3100 (Jetstream) Series Aeroplanes, identified as AD/JETSTREAM/79. This directive mandates actions regarding the main landing gear brake unit (paragraph 1). The requirement is to follow the British Aerospace Regional Aircraft Alert Service Bulletin 32-A-JA980540 and to align with UK Civil Aviation Authority AD 003-07-98 (section 1). Compliance with this directive necessitates that the specified actions in Part 1 and Part 2 of the requirement document are completed before 31 July 1998 (section 2). This directive became effective on 22 July 1998.
The airworthiness directive imposes specific obligations on the operators of Jetstream Series 3100 and 3200 aircraft. Operators must ensure that the wear of the brake unit heat pack is checked, as indicated by the wear indicator pins, and that these pins are correctly set (section 1). This is critical because a fully worn heat pack may not be indicated by the pins if they are not set correctly, creating a potentially unsafe condition (section 1). Compliance with the directive requires that these checks and inspections are conducted before the specified deadline to maintain the safety standards required by the Civil Aviation Regulations.
Breaching the requirements of this airworthiness directive can lead to significant consequences. Non-compliance with the directive’s mandates could result in the aircraft being deemed unairworthy, leading to grounding and potential legal ramifications (section 3). While the specific penalties for non-compliance are not detailed in the text, it is implied that the consequences can be severe, given the emphasis on ensuring the safety of the aircraft and its passengers. The directive underscores the importance of adhering to the specified requirements to avoid any risk to aviation safety.