AD/BAe 146/48 - Lift Spoiler Jack

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B03499 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


British Aerospace BAe 146 Series Aeroplanes

 

AD/BAe 146/48 Lift Spoiler Jack 2/94

Applicability: BAe 146 series aircraft fitted with either lift spoiler jack P/N P308-45-0002 or P308- 45-0102.

 

Requirement: Unless previously carried out action in accordance with British Aerospace Mandatory Inspection Service Bulletin 27-137.

 

Note: Both UK CAA AD 005-11-92 and FAA AD 93-21-07 amdt 39-8721 refer.

 

Compliance: At the next schedule maintenance check of the lift spoilers configuration warning microswitches or by 31 December 1994, whichever occurs first.

 

Background: The manufacturer has advised that the lift spoiler unlocked indication system may suffer from a dormant failure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, particularly Part 39 - 105, was enacted to address gaps in ensuring the safety of civil aviation in Australia by establishing a comprehensive regulatory framework governing various aspects of aviation safety. The Regulations were introduced to ensure the safety of air travel and to maintain a high standard of civil aviation safety in Australia. The Civil Aviation Regulations are a legislative instrument created by the Parliament of Australia and administered by the Civil Aviation Safety Authority (CASA). The policy objective of these regulations is to protect the public and ensure the safety of aircraft operations within Australia’s airspace by enforcing strict compliance with safety directives, such as Airworthiness Directives (ADs) aimed at addressing specific safety concerns in aircraft operation. In the context of the British Aerospace BAe 146 Series Aeroplanes, the AD/BAe 146/48, which concerns the lift spoiler jack, was introduced to mitigate the risk of a dormant failure in the lift spoiler unlocked indication system. The requirement for compliance with this directive aims to ensure that any potential safety issues are addressed promptly, thereby enhancing the overall safety of the aircraft. This specific directive applies to BAe 146 series aircraft equipped with certain lift spoiler jack parts and mandates that corrective actions be taken unless they have already been addressed according to specified service bulletins. The directive requires compliance by the next scheduled maintenance check of the lift spoiler configuration warning microswitches or by 31 December 1994, whichever comes first, to ensure that any latent issues are identified and rectified in a timely manner.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the safety of aircraft through Airworthiness Directives, such as AD/BAe 146/48 which concerns the lift spoiler jack on British Aerospace BAe 146 series aeroplanes. This regulation applies to aircraft within this series that are fitted with specific lift spoiler jack parts numbers, P308-45-0002 or P308-45-0102, and requires compliance unless the aircraft has already been subject to a previous corrective action as outlined in British Aerospace Mandatory Inspection Service Bulletin 27-137. This regulatory directive is not limited by geographic boundaries within Australia but is applicable to all BAe 146 series aircraft operating under the jurisdiction of the Australian Civil Aviation Safety Authority. The directive extends to ensure that the specified maintenance checks are conducted either at the next scheduled maintenance check of the lift spoiler configuration warning microswitches or by 31 December 1994, whichever comes first, thereby ensuring the safety of these aircraft in compliance with international standards as referenced by the UK Civil Aviation Authority and the Federal Aviation Administration.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, outlines the requirements and procedures for issuing airworthiness directives under the Civil Aviation Safety Authority (CASA). One such directive, AD/BAe 146/48, pertains to the lift spoiler jack on British Aerospace BAe 146 Series Aeroplanes (s 39-105). This directive applies to BAe 146 series aircraft equipped with certain lift spoiler jack parts (s 39-105(1)). The requirement is to ensure that specific actions are taken regarding the lift spoiler jack unless the aircraft has already undergone maintenance as specified in British Aerospace Mandatory Inspection Service Bulletin 27-137 (s 39-105(2)). These requirements are referenced in UK Civil Aviation Authority AD 005-11-92 and FAA AD 93-21-07 amendment 39-8721 (s 39-105(3)). The obligations imposed by this directive are quite clear. Operators of BAe 146 series aircraft must ensure that the specified actions concerning the lift spoiler jack are completed. This involves checking and possibly repairing or replacing the lift spoiler jack, particularly focusing on the microswitches for the lift spoilers configuration warning system. The directive mandates that this must be done at the next scheduled maintenance check for the lift spoiler configuration or by 31 December 1994, whichever comes first (s 39-105(4)). Failure to comply with these obligations could result in the aircraft being deemed unairworthy. Non-compliance with the airworthiness directive could lead to severe consequences. CASA may take enforcement actions against the operators for failing to adhere to the specified maintenance requirements. The penalties for non-compliance can be substantial, including fines and potential grounding of the aircraft. The specific maximum penalties are not detailed within the directive but can be severe under the broader Civil Aviation Regulations, reflecting the critical nature of maintaining aircraft airworthiness to ensure public safety.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.