AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BAe 146/104 and issues the following AD under subregulation 39.1 (1) of CASR 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 146/104
Amdt 1
APU and IDG In-Line Splices 12/2004
Applicability: All BAe 146 100, 200, and 300 series aeroplanes with Erma/Sunleigh Splice part number 12197/2 (BAe Systems standard part S1212-106) installed in the auxiliary power unit (APU) generator feeder cables or the main engine integrated drive generator (IDG) feeder cables.
Note 1: This Directive is not applicable to aeroplanes with any of the following modifications incorporated:
Cable Type APU Feeder
Modification Number
HCM36097A, HCM36097B, HCM36089A, or HCM36089B.
IDG Feeder HCM01253A, HCM01253B, HCM01203A, or HCM01203C.
Requirement: Inspect all the APU generator feeder cable and the main engine IDG feeder cable in- line splices in accordance with BAe Systems (Operations) Limited Mandatory Inspection Bulletin ISB.24-139 dated 2 April 2003.
Note 2: CAA(UK) AD 005-04-2003 refers.
Compliance: Within twelve months after the last inspection of the in-line splices in accordance with AD/BAe 146/104 and thereafter at intervals of twelve months until each cable is modified in accordance with one of optional modification listed at Note 1.
This Amendment becomes effective on 25 November 2004.
Background: The original issue of this Directive superseded AD/BAe 146/23 Amdt 2 and AD/BAe 146/24 Amdt 2, which were cancelled. The Directive continued the repetitive inspection of the in-line splices and introduced optional terminating action.
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/104 Amdt 1 (continued)
This Amendment changes Note 1 and the Compliance Statement to ensure that it is clear that any one of the listed modifications terminates the repetitive inspection of each cable in-line splices.
The original issue of this Airworthiness Directive became effective on 12 June 2003.
James Coyne
Delegate of the Civil Aviation Safety Authority 15 October 2004
The above AD is notified in the Commonwealth of Australia Gazette on 3 November 2004.
Overview
The Civil Aviation Safety Authority Act 1998 was enacted to provide for the regulation of civil aviation safety, including the establishment of airworthiness standards and the issuance of airworthiness directives. This legislation addresses the need to ensure that aircraft and aeronautical products meet specific safety standards to protect public safety in civil aviation. The Act empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives, such as the one issued for the British Aerospace BAe 146 Series Aeroplanes, to address safety concerns identified through ongoing monitoring and assessment. The policy objective of the Act is to maintain and enhance the safety of civil aviation by ensuring that all aircraft and aeronautical products are airworthy and comply with established safety standards. The Airworthiness Directive AD/BAe 146/104 Amdt 1, issued under the authority of the Civil Aviation Safety Authority Act 1998, mandates the inspection and, where necessary, the modification of in-line splices in the auxiliary power unit generator feeder cables and the main engine integrated drive generator feeder cables of BAe 146 100, 200, and 300 series aeroplanes to address safety risks associated with these components.
Scope and Application
The Airworthiness Directive (AD) AD/BAe 146/104 Amdt 1 applies specifically to British Aerospace BAe 146 Series Aeroplanes, namely the BAe 146 100, 200, and 300 series that have Erma/Sunleigh Splice part number 12197/2 installed in the auxiliary power unit (APU) generator feeder cables or the main engine integrated drive generator (IDG) feeder cables. The directive is issued under the authority of the Civil Aviation Safety Authority (CASA) delegate and pertains to the inspection and maintenance of these cable splices to address an identified unsafe condition. Notably, the directive does not apply to aeroplanes that have incorporated specific cable modifications, namely HCM36097A, HCM36097B, HCM36089A, HCM36089B, HCM01253A, HCM01253B, HCM01203A, or HCM01203C. The geographic reach of this directive is the Commonwealth of Australia, and it extends to any entity or individual operating BAe 146 series aeroplanes within Australia. The directive mandates inspections to be conducted in accordance with BAe Systems (Operations) Limited Mandatory Inspection Bulletin ISB.24-139 dated 2 April 2003, and compliance is required within twelve months from the last inspection, followed by annual inspections until the cables are modified. This AD was notified in the Commonwealth of Australia Gazette on 3 November 2004.
Key Provisions
The Airworthiness Directive (AD) AD/BAe 146/104 Amdt 1, issued by the Civil Aviation Safety Authority (CASA) delegate, mandates specific actions for maintaining the safety of British Aerospace (BAe) 146 Series Aeroplanes. Specifically, it applies to all BAe 146 100, 200, and 300 series aeroplanes that have Erma/Sunleigh Splice part number 12197/2 installed in the auxiliary power unit (APU) generator feeder cables or the main engine integrated drive generator (IDG) feeder cables (Applicability). However, aeroplanes with specific cable modifications mentioned in the directive are exempted (Note 1). The directive requires that all APU generator feeder cable and main engine IDG feeder cable in-line splices be inspected in accordance with BAe Systems (Operations) Limited Mandatory Inspection Bulletin ISB.24-139 dated 2 April 2003 (Requirement). The inspections must occur within twelve months after the last inspection and then at twelve-month intervals until the cables are modified in accordance with the optional modifications listed (Compliance).
The AD imposes obligations on the operators of the BAe 146 Series Aeroplanes to ensure compliance with the inspection and modification requirements set out in the directive. This includes conducting regular inspections of the specified cable splices and implementing any of the optional modifications to terminate the repetitive inspections once applied. Operators must keep detailed records of inspections and modifications performed, ensuring that all actions are carried out in accordance with the instructions provided. Additionally, operators must ensure that any modifications are carried out by qualified personnel and that the aircraft remain airworthy throughout the process.
Failure to comply with the requirements of the AD can result in serious consequences. Non-compliance may lead to the aircraft being deemed unairworthy, which could result in grounding of the aircraft and legal action against the operator. The AD does not specify particular penalties; however, general aviation regulations provide for potential fines and enforcement actions by CASA. The severity of the penalties can vary based on the extent of non-compliance and any resultant safety issues. Continuous non-compliance may also lead to revocation of the aircraft's certificate of airworthiness, further compounding the legal and operational repercussions for the operator.