AD/HS 748/7 - Flight Control System Bearing Retaining Rings

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, establish comprehensive rules to ensure the safety and efficiency of civil aviation. Specifically, Part 39 - 105 of these regulations addresses Airworthiness Directives, which are legally enforceable rules related to design, production, maintenance, and operation of aircraft. The aim of these directives is to address identified safety issues and ensure that aircraft meet minimum safety standards. The particular legislative instrument F2006B10572 pertains to British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes, focusing on the flight control system bearing retaining rings. The directive mandates compliance with British Aerospace Mandatory Service Bulletin 27/110, aligning with the requirements set by the UK Civil Aviation Authority. This ensures that all HS748 aircraft are subject to ongoing checks to maintain the security of bearings in housings held in place by Walker Schofield retaining rings. The overarching policy objective is to mitigate potential risks and enhance the safety of air travel by enforcing stringent maintenance and inspection protocols.

Scope and Application

The Civil Aviation Regulations 1998, as part of the Commonwealth of Australia’s legislative framework, encompass Part 39 - 105 which details the Civil Aviation Safety Authority’s (CASA) schedule of airworthiness directives. Specifically, this part addresses the requirements for British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes, with a focus on AD/HS 748/7 concerning the flight control system bearing retaining rings. This directive applies to all HS748 aircraft operating within Australia, ensuring adherence to the mandatory service bulletin issued by British Aerospace, referenced as 27/110. The requirement mandates actions that align with the inspection intervals specified in the accomplishment instructions of the requirement document, which correspond to the UK Civil Aviation Authority's AD 006-03-87. Compliance with these directives is critical for maintaining the airworthiness of the aircraft, as it mandates an ongoing check for the security of bearings in housings held in place by Walker Schofield retaining rings.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the Airworthiness Directives (ADs) for various aircraft types, including the British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes. AD/HS 748/7 pertains to the flight control system bearing retaining rings, as detailed in section 13/94. This directive applies to all HS 748 aircraft, making it crucial for operators and maintenance personnel to adhere to its requirements to ensure continued airworthiness. The primary directive (section 13/94) mandates that actions must be taken in accordance with British Aerospace Mandatory Service Bulletin 27/110, which is closely related to UK Civil Aviation Authority (CAA) AD 006-03-87. The obligations under this directive include performing inspections at intervals specified in paragraphs 2.A and 2.B of the Requirement Document Accomplishment Instructions. These inspections are critical for verifying the security of bearings in housings held in place by Walker Schofield retaining rings, as required by the UK CAA. This directive ensures that any potential issues with the flight control system are identified and rectified promptly, maintaining the safety and integrity of the aircraft. Failure to comply with the AD/HS 748/7 directive may result in serious safety implications, potentially leading to operational restrictions or grounding of the aircraft. The consequences of non-compliance are significant, as the directive is designed to prevent mechanical failures that could endanger flight safety. While the specific penalties are not detailed in the text, non-compliance with Civil Aviation Regulations can result in substantial fines, legal action, and other enforcement measures by the Civil Aviation Safety Authority (CASA). The importance of adhering to these regulations cannot be overstated, as they are fundamental to ensuring the safety of air travel.