Overview

The Civil Aviation Regulations 1998, as amended, include Part 39 - 105, which concerns Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA). The AD/HS 125/165 pertains to the nose landing gear drag stay of the British Aerospace BAe 125 Series aeroplanes, specifically the Hawker 800XP and Hawker 800A series aircraft. This Airworthiness Directive was enacted to address the problem of nose landing gear roller clearances exceeding specifications, which could potentially lead to damage upon landing. The directive was issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 and became effective on 22 March 2001. The requirement to remove paint from the drag stay arm, check roller clearances, and adjust as necessary is in accordance with the instructions set out in Raytheon Aircraft Service Bulletin SB 32-3274. Compliance with this directive must be achieved within 50 hours time-in-service after the effective date, unless already accomplished.

Scope and Application

The Airworthiness Directive AD/HS 125/165 applies specifically to the model Hawker 800XP and Hawker 800A series aircraft, as outlined in Raytheon Aircraft Service Bulletin SB 32-3274 dated August 1999. The directive is issued under the Civil Aviation Regulations 1998 (CAR 1998), subregulation 39.1 (1), by a delegate of the Civil Aviation Safety Authority (CASA). It mandates that the specified actions be taken to address an identified unsafe condition, which is the excessive roller clearances in the nose landing gear drag stay arm. These actions include removing paint from the drag stay arm at its contact point with the stop bolt, checking the roller clearances, and making necessary adjustments in line with the instructions provided in the referenced service bulletin. The directive is effective from 22 March 2001 and requires compliance within 50 hours of time-in-service after this date, unless the actions have already been completed. This AD extends to the national jurisdiction of Australia, impacting all relevant aircraft within its territory.

Key Provisions

The Airworthiness Directive AD/HS 125/165 issued under the Civil Aviation Regulations 1998 (CAR 1998) pertains specifically to the Hawker 800XP and Hawker 800A series aircraft, as outlined in the applicability section (section 1). This directive is effective as of 22 March 2001 and requires that the specified actions be undertaken within 50 hours of time-in-service following this date, unless they have already been completed (section 3). The requirement is to remove paint from the drag stay arm of the nose landing gear at the point of contact with the stop bolt, check the roller clearances, and make any necessary adjustments according to the instructions provided in Raytheon Aircraft Service Bulletin SB 32-3274 (section 2). This bulletin also references FAA AD 2000-24-25 Amendment 39-12032, indicating a coordinated effort to address this safety concern across jurisdictions. The obligations imposed by this directive are clear and specific. Aircraft operators must ensure that the actions outlined in the requirement section are performed by qualified personnel within the specified timeframe. This includes the removal of paint from the drag stay arm, checking and adjusting the roller clearances as per the detailed instructions in the referenced service bulletin. Failure to comply with these requirements may result in the aircraft not meeting airworthiness standards, potentially leading to operational restrictions or grounding. The directive underscores the importance of maintaining precise specifications to ensure the safe operation of the aircraft, particularly in relation to the extension of the nose landing gear and the prevention of potential damage during landing. Failure to comply with the provisions of this Airworthiness Directive may result in serious safety implications, as the directive is designed to address a condition that could lead to damage to the aircraft upon landing. While the specific penalties for non-compliance are not detailed in the text, it is implicit that serious consequences could follow, including potential enforcement actions by the Civil Aviation Safety Authority (CASA). The severity of these consequences could include fines, operational restrictions, or even the grounding of the aircraft until the required actions are satisfactorily completed. The directive's emphasis on timely action highlights the critical nature of adhering to these safety requirements to ensure the continued airworthiness of the affected aircraft.