COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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 or aeronautical product 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.
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/96 Webs/Flanges of Frames 15, 18, 41, and 43 3/2002
Applicability: All BAe 146 Series 100, 200, and 300 aircraft. All Avro 146-RJ70, -RJ85, and -RJ100 aircraft.
Those aircraft without modifications HCM30514A or C, and B or D incorporated. Requirement: Inspect in accordance with BAE Systems Mandatory Service Bulletin ISB.53-165. Compliance: As specified in the Requirement document.
This Airworthiness Directive becomes effective on 21 March 2002.
Background: Possible ingress of moisture and subsequent corrosion leading to cracking has been discovered at the inner webs/flanges of frame 18.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 8 February 2002
The above AD is notified in the Commonwealth of Australia Gazette on 27 February 2002.
Overview
The Civil Aviation Regulations 1998, as part of the broader legislative framework governing aviation safety in Australia, introduced various measures to ensure that aircraft meet safety standards. One such measure is the Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA). This specific AD, numbered AD/BAe 146/96, was enacted on 21 March 2002, and pertains to the British Aerospace BAe 146 Series Aeroplanes, specifically the Series 100, 200, and 300 aircraft, as well as the Avro 146-RJ70, -RJ85, and -RJ100 aircraft. The directive was introduced to address the safety issue of potential moisture ingress and subsequent corrosion at the inner webs/flanges of frames 15, 18, 41, and 43, which could lead to structural cracking. The objective of this AD is to mandate inspections in accordance with BAE Systems Mandatory Service Bulletin ISB.53-165 to mitigate the identified safety risk.
Scope and Application
The Civil Aviation Regulations 1998, as part of the legislative framework governing aviation safety in Australia, contain specific directives aimed at ensuring the airworthiness of aircraft and aeronautical products. In this context, the Airworthiness Directive (AD) issued under subregulation 39.1 (1) pertains to the British Aerospace BAe 146 Series Aeroplanes and specifically addresses the inspection of webs/flanges of frames 15, 18, 41, and 43 to mitigate the risk of moisture ingress and subsequent corrosion that may lead to structural cracking. The directive applies to all BAe 146 Series 100, 200, and 300 aircraft as well as Avro 146-RJ70, -RJ85, and -RJ100 aircraft that have not incorporated modifications HCM30514A or C, and B or D. The directive mandates inspections in accordance with BAE Systems Mandatory Service Bulletin ISB.53-165, with compliance timelines specified within the requirement document itself. This AD, which became effective on 21 March 2002, is issued by a delegate of the Civil Aviation Safety Authority and was published in the Commonwealth of Australia Gazette on 27 February 2002, thereby establishing its legal applicability and enforcement across the national jurisdiction.
Key Provisions
The Airworthiness Directive (AD) AD/BAe 146/96, issued under subregulation 39.1(1) of the Civil Aviation Regulations 1998 (CAR 1998), applies to all British Aerospace BAe 146 Series 100, 200, and 300 aircraft, as well as all Avro 146-RJ70, -RJ85, and -RJ100 aircraft, unless they have modifications HCM30514A or C, and B or D incorporated. The directive requires an inspection of the inner webs/flanges of frames 15, 18, 41, and 43 in accordance with BAE Systems Mandatory Service Bulletin ISB.53-165, due to the risk of moisture ingress and subsequent corrosion leading to cracking. The compliance period for this AD is specified in the requirement document.
The obligations imposed by this AD are that all specified aircraft must undergo the required inspection to ensure that the identified safety issue is addressed. This involves inspecting the mentioned frames in accordance with the detailed instructions provided by the BAE Systems Mandatory Service Bulletin ISB.53-165. Operators must ensure that the inspections are conducted by appropriately qualified personnel and that any necessary corrective actions are taken to mitigate the risk of corrosion and cracking.
Failure to comply with this AD may result in serious safety risks, potentially leading to aircraft becoming unairworthy. The AD is legally binding, and non-compliance could result in enforcement actions by the Civil Aviation Safety Authority (CASA). While the AD itself does not specify criminal or civil penalties, non-compliance could potentially lead to the grounding of the aircraft, fines, or other regulatory actions under the Civil Aviation Act 1988 and associated regulations. Operators must ensure adherence to the AD to maintain the airworthiness of their aircraft.