AD/HS 125/143 Amdt 1 - Addition of Vents and Pressure Relief Device

Overview

The Civil Aviation Regulations 1998, which were enacted by the Parliament of the Commonwealth of Australia, serve to regulate and ensure the safety of civil aviation within Australia. Specifically, Part 39 - 105 of these regulations addresses the airworthiness directives, including Amendment 1 for the British Aerospace BAe 125 Series Aeroplanes, issued in 1994. This legislation was introduced to address the structural integrity concerns of the BAe 125 Series 1000A and 1000B and Hawker 1000 models, particularly in the event of an explosive decompression. The underlying policy objective is to ensure compliance with the manufacturer's service bulletins, which are critical for maintaining the safety and airworthiness of these aircraft. The Civil Aviation Safety Authority mandates these actions to mitigate potential risks and uphold the high standards of aviation safety in Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for British Aerospace BAe 125 Series aeroplanes. This regulation applies to aircraft models BAe 125 Series 1000A and 1000B, as well as Hawker 1000. The directive mandates compliance with Hawker Raytheon Corporate Jets Mandatory Service Bulletins 53-76-3627A, 53-81-3661B, and 21-151-25A683C, which outline specific actions necessary to ensure the structural integrity of the aircraft in the event of an explosive decompression. The compliance deadline for these modifications is before 31 March 1995, as set by the manufacturer and the UK Civil Aviation Authority (CAA). This regulation, thus, extends its jurisdictional reach across the Commonwealth of Australia, ensuring that all relevant aircraft operating within its airspace adhere to the specified safety directives. There are no stated exclusions or exemptions within the text, and the regulation's application may be further refined through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establish the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives for British Aerospace BAe 125 Series aeroplanes. Within this section, AD/HS 125/143 Amendment 1 (AD/HS 125/143(1)) addresses the addition of vents and a pressure relief device for certain models. The directive applies to BAe 125 Series 1000A and 1000B, as well as the Hawker 1000. The requirement is that actions must be taken in accordance with three specific Hawker Raytheon Corporate Jets Mandatory Service Bulletins: 53-76-3627A, 53-81-3661B, and 21-151-25A683C. Compliance with these service bulletins is mandatory prior to 31 March 1995. The obligations imposed by AD/HS 125/143(1) on the parties involved primarily revolve around ensuring the structural integrity of the aircraft, particularly in the event of an explosive decompression. Aircraft owners and operators are required to adhere to the instructions provided in the mandatory service bulletins, which detail the specific actions necessary to install the vents and pressure relief device. These actions may involve modifications to the aircraft's structure, and therefore, must be performed by qualified personnel in accordance with the manufacturer's guidelines. Failure to comply with the provisions of AD/HS 125/143(1) may result in significant consequences. Under the Civil Aviation Act 1988, non-compliance with an airworthiness directive can be considered an offence. Those found in breach may face civil or criminal penalties, including fines or imprisonment, depending on the severity of the breach. The exact penalties will be determined by a court, but the Act provides for substantial fines and potential imprisonment for serious or repeated violations. It is therefore crucial for aircraft owners and operators to ensure full compliance with this airworthiness directive to avoid any legal repercussions.