Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, serve to regulate civil aviation and ensure the safety of aircraft operations within Australia. As part of these regulations, the Civil Aviation Safety Authority (CASA) has the authority to issue Airworthiness Directives (ADs) to address specific safety issues identified in aircraft or aeronautical products. The AD/TB20/40, issued on 24 October 2001, is one such directive aimed at addressing an unsafe condition identified in the Aerospatiale (Socata) TB20 (Trinidad) series aeroplanes equipped with certain ammeter options. This directive was prompted by reports of in-flight failures of the ammeter electrical circuit, which could lead to smoke or a burning smell in the cockpit, and was issued in response to a recommendation from the French Direction Générale de L’Aviation Civile. The policy objective of this AD is to mandate the modification of the ammeter electrical circuit to ensure the safety of the aircraft and its occupants.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39, contains Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA) to ensure the safety of aircraft in Australian airspace. This particular AD/TB20/40 pertains to all Aerospatiale (Socata) TB20 (Trinidad) Series aeroplanes that are equipped with specific ammeter options. The directive mandates modifications to the ammeter electrical circuit to mitigate the risk of in-flight failures that could potentially lead to smoke or a burning smell in the cockpit, as reported by the French Direction Générale de L’Aviation Civile. The required modifications must be carried out in accordance with Socata Mandatory Service Bulletin TB Aircraft 10-122-24 dated July 2001. The compliance timeline for these modifications is set at the next scheduled maintenance check, but no later than 31 December 2001. This Airworthiness Directive applies on a national level and extends its reach to all relevant aircraft within the specified parameters, ensuring that safety standards are uniformly adhered to across the Commonwealth.

Key Provisions

The key provisions of this Airworthiness Directive (AD) under the Civil Aviation Regulations 1998 (CAR 1998) are detailed in section 39.1 (1). The AD requires that specific action be taken regarding the ammeter electrical circuit of Aerospatiale (Socata) TB20 (Trindad) Series Aeroplanes equipped with certain ammeter options. This action is necessary to address an unsafe condition identified by the French Direction Générale de L’Aviation Civile, which has reported in-flight failures of the ammeter electrical circuit. Such failures could potentially lead to smoke or a burning smell in the cockpit. The AD mandates that the ammeter electrical circuit be modified in accordance with Socata Mandatory Service Bulletin TB Aircraft 10-122-24 dated July 2001. This directive applies to all Model TB20 aeroplanes equipped with ammeter options OPT 10 593 00M, OPT 10 689 00M, or OPT D689 00M. The obligations and requirements imposed by this AD are clear and specific. Operators of the affected Aerospatiale (Socata) TB20 (Trindad) Series Aeroplanes must ensure that the ammeter electrical circuit is modified as per the instructions provided in Socata Mandatory Service Bulletin TB Aircraft 10-122-24 dated July 2001. This modification must be completed during the next scheduled maintenance check and must be finalised no later than 31 December 2001. Failure to comply with this directive could result in the aeroplane not meeting the required airworthiness standards, which could in turn lead to potential safety hazards during flight. Any breach of this Airworthiness Directive can lead to civil or criminal consequences. While the Civil Aviation Regulations 1998 do not specify maximum penalties in this instance, non-compliance with an AD generally attracts stringent regulatory action. The Civil Aviation Safety Authority (CASA) can take measures such as grounding the aircraft, imposing fines, or even revoking the aircraft’s certificate of airworthiness. Additionally, operators found in breach of such directives may face legal action under other relevant aviation laws, which could result in substantial financial penalties or other enforcement actions. Ensuring compliance is therefore critical for maintaining the safety and airworthiness of the aircraft in question.