AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BAe 146/71 Amdt 1 and issues the following 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 146/71
Amdt 2
NLG Retraction Jack Attachment Boss 5/2002
Applicability: 1. All BAe 146 series aircraft.
2. All Avro 146-RJ70 aircraft up to and including E1267 All Avro 146-RJ85 aircraft up to and including E2333 All Avro 146-RJ100 aircraft up to and including E3332
Requirement: Inspect in accordance with British Aerospace Mandatory Service Bulletin 53-152 Revision 2.
Compliance: For aircraft that have accumulated 8,000 flights:
Within 200 flights or 28 days after 31 December 1998, whichever occurs first.
For aircraft that have accumulated less than 8,000 flights:
Within 200 flights or 28 days after accumulating 8,000 flights, whichever occurs first.
Repeat thereafter as specified in the Requirement document.
The compliance times of the previous issue of this Directive remain unchanged by this issue.
This Airworthiness Directive becomes effective on 16 May 2002.
Background: Evidence of cracking has been found on several in-service aircraft in the retraction jack attachment boss on the left hand nose landing gear (NLG) sidewall, which in some circumstances has led to replacement of the sidewall.
Amendment 1 added new inspection procedures.
Amendment 2 is issued in response to a revision of the Requirement document, which introduces additional closing action to cover a complete sidewall replacement; plus further drawing information
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/71 Amdt 2 (Continued)
Amendment 1 of this Airworthiness became effective on 4 October 2001
The original issue of this Airworthiness Directive became effective on 31 December 1998.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 27 March 2002
The above AD is notified in the Commonwealth of Australia Gazette on 24 April 2002.
Overview
The Civil Aviation Safety Authority (CASA) introduced Amendment 2 to Airworthiness Directive AD/BAe 146/71 in 2002, addressing an identified safety concern in the British Aerospace BAe 146 series aircraft. This legislative instrument revokes the earlier Amendment 1 and responds to evidence of cracking found on the retraction jack attachment boss in the left-hand nose landing gear sidewall of several in-service aircraft, which in some cases has necessitated sidewall replacement. This amendment introduces additional closing actions to cover complete sidewall replacement and includes further drawing information. The directive mandates inspections in accordance with British Aerospace Mandatory Service Bulletin 53-152 Revision 2, with compliance timelines based on the number of accumulated flights by the aircraft. This Airworthiness Directive became effective on 16 May 2002, ensuring that the safety of the BAe 146 series aircraft is maintained through regular inspections and necessary repairs.
Scope and Application
The Airworthiness Directive (AD) AD/BAe 146/71 Amdt 2 applies to all BAe 146 series aircraft, including Avro 146-RJ70 aircraft up to and including E1267, Avro 146-RJ85 aircraft up to and including E2333, and Avro 146-RJ100 aircraft up to and including E3332. This directive, issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998, mandates specific actions to address an identified unsafe condition concerning the retraction jack attachment boss on the left-hand nose landing gear sidewall. The requirement is to inspect the aircraft in accordance with British Aerospace Mandatory Service Bulletin 53-152 Revision 2. Compliance timelines vary based on the number of accumulated flights, with inspections due within 200 flights or 28 days after specific milestones, as detailed in the directive. This AD became effective on 16 May 2002, and it was notified in the Commonwealth of Australia Gazette on 24 April 2002. The directive revokes the previous Amendment 1 and introduces additional requirements, including closing actions for complete sidewall replacement and further drawing information.
Key Provisions
The main operative sections of this Airworthiness Directive (AD/BAe 146/71 Amdt 2) concern the inspection of the nose landing gear (NLG) retraction jack attachment boss on all BAe 146 series aircraft (sections 1 and 2). This requirement is detailed in section 3, which mandates that inspections be carried out in accordance with British Aerospace Mandatory Service Bulletin 53-152 Revision 2. The compliance timeline is specified in section 4, stipulating that inspections must be performed within certain flight cycles or timeframes, depending on the accumulated flight hours of the aircraft. The AD became effective on 16 May 2002.
This Airworthiness Directive imposes obligations on operators of BAe 146 series aircraft to inspect the NLG retraction jack attachment boss as per the specified requirements and timelines. Operators must ensure that all inspections are carried out in compliance with the instructions detailed in the British Aerospace Mandatory Service Bulletin 53-152 Revision 2. The AD applies to all BAe 146 series aircraft and includes specific aircraft serial numbers for Avro 146-RJ70, Avro 146-RJ85, and Avro 146-RJ100 models. These inspections are critical to maintaining the airworthiness of the aircraft and ensuring safety.
Failure to comply with the requirements of this Airworthiness Directive can result in serious safety issues, including potential structural failure of the NLG retraction jack attachment boss. While the specific penalties for non-compliance are not detailed in the text, non-compliance with ADs generally can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, penalties, and potential grounding of the aircraft until compliance is achieved. The consequences of non-compliance can also extend to civil liabilities arising from accidents or incidents caused by failure to adhere to AD requirements.