COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace BAe 3100 (Jetstream) Series Aeroplanes
AD/JETSTREAM/57 Tail Unit De-Icing System 1/93
Applicability: All Model 3100, and All Model 3200 up to and including constructors number 969 and constructors number 971.
Requirement: Action in accordance with BAe Jetstream Mandatory ASB 30-A-JA 920444.
Compliance: Part 1: Within 150 hours time in service after 7 January 1993, and thereafter at intervals not to exceed 150 hours time in service until Part 2 or 3, as applicable, is accomplished.
Part 2 or 3: Prior to 30 April 1993.
Background: The manufacturer has determined that the possibility exists for water to become entrapped in the tail unit de-icing system. If sufficient water has collected, ice can form in cold conditions which could restrict or prevent the air flow, causing unsatisfactory operation of the tailplane de-icing boots.
Overview
The Civil Aviation Regulations 1998, particularly under Part 39, provides comprehensive rules and directives to ensure the safety and airworthiness of aircraft operating in Australia. One such directive, AD/JETSTREAM/57, pertains specifically to British Aerospace BAe 3100 (Jetstream) series aeroplanes, addressing a critical safety issue with the tail unit de-icing system. This directive was introduced to mitigate the risk of water entrapment in the tail unit de-icing system, which, if not managed, could lead to the formation of ice that might impair the operation of the tailplane de-icing boots. The regulation mandates specific actions to ensure the de-icing system's functionality, requiring compliance within certain timeframes, such as within 150 hours after 7 January 1993 and subsequent intervals, with a final compliance deadline set prior to 30 April 1993. This legislative instrument aims to uphold the high safety standards mandated by the Civil Aviation Safety Authority, ensuring that aircraft maintain their airworthiness and safety under all operating conditions.
The enactment of this directive by the Civil Aviation Safety Authority reflects a policy objective to proactively address potential safety hazards in civil aviation, ensuring that all aircraft meet stringent safety requirements. The directive was issued to address a specific gap identified by the manufacturer, British Aerospace, concerning the potential for ice formation in the tail unit de-icing system of the Jetstream series aeroplanes. By specifying precise compliance timelines, the Civil Aviation Regulations 1998 ensure that operators of these aircraft take the necessary measures to prevent operational failures that could arise from ice accumulation, thereby safeguarding the safety of air travel.
Scope and Application
The Civil Aviation Regulations 1998, specifically PART 39 - 105, mandates the compliance of all Model 3100 and Model 3200 (up to and including constructors numbers 969 and 971) British Aerospace BAe 3100 (Jetstream) Series Aeroplanes with Airworthiness Directives concerning the tail unit de-icing system. This directive applies to all operators and owners of these aircraft models, ensuring they adhere to the prescribed maintenance and inspection requirements. The regulation's jurisdictional reach is nationwide, as it is governed by the Commonwealth of Australia through the Civil Aviation Safety Authority (CASA). The directive stipulates that compliance must be achieved in two phases: Part 1 requires action to be taken within 150 hours of time in service after 7 January 1993 and must be repeated at intervals not exceeding 150 hours until Part 2 or 3 is accomplished. Part 2 or 3 must be completed prior to 30 April 1993. There are no stated exclusions or exemptions within the scope of this directive, and compliance must strictly follow the BAe Jetstream Mandatory ASB 30-A-JA 920444, with any further specifics or modifications potentially outlined in subordinate instruments issued by CASA.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, include detailed provisions regarding airworthiness directives for various aircraft types, including the British Aerospace BAe 3100 (Jetstream) series aeroplanes. In this case, AD/JETSTREAM/57 pertains to the tail unit de-icing system, highlighting the need for compliance with the BAe Jetstream Mandatory ASB 30-A-JA 920444 directive. The directive applies to all Model 3100 and Model 3200 aircraft up to constructors numbers 969 and 971. The requirements are twofold: Part 1 mandates action within 150 hours of time in service after 7 January 1993, and this action must be repeated at intervals not exceeding 150 hours until Part 2 or 3 is completed. Part 2 or 3 must be executed before 30 April 1993.
The obligations under this directive are clear and precise. Operators of affected aircraft must ensure that the tail unit de-icing system is inspected and maintained according to the specified timelines and procedures outlined in the BAe Jetstream Mandatory ASB 30-A-JA 920444 directive. This includes regular checks to prevent water entrapment, which could lead to ice formation, thus compromising the airworthiness of the aircraft. Compliance with these provisions is critical to maintain the safety and operational integrity of the aircraft.
Failure to adhere to the requirements set forth in AD/JETSTREAM/57 may result in significant consequences. Non-compliance with airworthiness directives is a serious matter under the Civil Aviation Regulations. The Civil Aviation Safety Authority (CASA) has the authority to take enforcement actions against operators who do not comply with these directives. Potential penalties include fines, suspension or revocation of the aircraft’s airworthiness certificate, and possibly more severe penalties if the non-compliance leads to safety incidents. The exact penalties can vary depending on the severity and circumstances of the breach but are intended to ensure stringent adherence to safety standards.