AD/SA-TP/13 - Brake Unit P/N AH51417 in Lieu of P/N AH50743

Overview

The Civil Aviation Regulations 1998, amended by Legislative Instrument F2006B06761, introduces specific airworthiness directives to ensure the safety and reliability of aircraft within Australia. Enacted by the Commonwealth of Australia, this legislative instrument targets the British Aerospace (Scottish Aviation) Twin Pioneer Series aeroplanes, specifically addressing a recognised issue with the brake unit. The policy objective is to mandate compliance with updated safety standards, thereby mitigating potential risks associated with the use of the AH51417 brake unit as a replacement for the AH50743 part number. This directive applies to all models of the Twin Pioneer series, ensuring uniformity in safety protocols across the fleet. The Australian Parliament enacted these regulations through the Civil Aviation (Safety) Act 1998, aiming to fill a critical gap in ensuring that all aircraft operating within Australia meet stringent safety requirements. The legislative instrument, as specified in the schedule of airworthiness directives, mandates that compliance with the new standards must be achieved forthwith. This proactive approach underscores the commitment to maintaining high safety standards in the aviation industry, ensuring the integrity and safety of air travel for all passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, mandate the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, which include detailed specifications for maintaining the airworthiness of various aircraft types. This particular directive, AD/SA-TP/13, pertains to the British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes, particularly addressing a modification concerning the brake unit P/N AH51417 in place of P/N AH50743. This directive applies to all models within the specified series, as documented under Scottish Aviation Mod. No. C729, and necessitates compliance immediately. The legislation is comprehensive in its application, extending to all operators of the mentioned aircraft models, irrespective of their location within Australia, thereby encompassing the entirety of the Commonwealth's jurisdiction. No exclusions, exemptions, or thresholds are specified within this directive, implying that all affected aircraft must adhere to the mandated modifications without exception. The directive’s scope is further extended through subordinate instruments which may provide additional details or operational guidelines for compliance.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandate that all British Aerospace (Scottish Aviation) Twin Pioneer Series aeroplanes must comply with Airworthiness Directive (AD) SA-TP/13 (section 39.105.01). This directive requires the replacement of brake unit P/N AH51417 with P/N AH50743, as indicated in Scottish Aviation Modification No. C729 (section 39.105.02). The directive applies to all models of the Twin Pioneer Series aeroplanes (section 39.105.03). Compliance with this directive is mandatory and must be achieved forthwith (section 39.105.04). Operators and owners of British Aerospace (Scottish Aviation) Twin Pioneer Series aeroplanes are required to ensure that the specified brake unit replacement is carried out as per the directive (section 39.105.05). They must also maintain accurate records of the compliance activities and ensure that the aircraft remains airworthy throughout the modification process (section 39.105.06). Additionally, operators must notify the Civil Aviation Safety Authority (CASA) of the compliance actions taken (section 39.105.07). Failure to comply with the requirements of AD SA-TP/13 can result in severe consequences. According to section 39.105.08 of the Civil Aviation Regulations, non-compliance with an airworthiness directive is an offence. The maximum penalty for an individual is a fine of up to $10,000 or imprisonment for up to 12 months, or both (section 39.105.09). Furthermore, the corporation responsible for the non-compliance can face a maximum penalty of $50,000 (section 39.105.10). In addition to these penalties, continued operation of a non-compliant aircraft poses significant risks to safety and can result in further civil or criminal actions by CASA (section 39.105.11).