Overview

The Civil Aviation Regulations 1998, as amended by the Legislative instrument F2006B07326, introduced specific directives to address safety concerns related to the Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes. Enacted by the Commonwealth of Australia, this legislation aims to ensure the safety of civil aviation operations by addressing issues identified in the aircraft's cabin door catch mechanism. The policy objective is to prevent potential failures of the door catch that may arise from incorrect adjustments, thereby reducing the risk of in-flight incidents. This amendment, effective from 12 December 1991, responds to instances of cracked catches on cabin access doors, requiring the inspection and replacement of the cabin door catches in accordance with specified technical requirements. The compliance date set for these safety measures was 3 October 1991, reflecting the urgency and importance of addressing these specific safety concerns.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes, namely the TB20 and TB21 models, focusing on the inspection and retirement of cabin door catches to ensure airworthiness. This legislation is issued by the Civil Aviation Safety Authority (CASA) and is applicable on a Commonwealth level, meaning it has jurisdiction across Australia. The regulation aims to address safety concerns arising from instances of cracked catches on cabin access doors due to incorrect adjustment, which could potentially result in the failure of the door catch. The compliance date for this directive was previously set for 3 October 1991, and the current Amendment 1 is effective from 12 December 1991. The directive incorporates technical requirements from DGAC AD 91-143 (A) R1, and references Socata TB SB 58/1 for additional guidance. The scope of this legislation ensures that all relevant aircraft and their operators adhere to the specified safety measures to maintain the airworthiness of the aircraft in question.

Key Provisions

The key operative sections of the Civil Aviation Regulations 1998, particularly as they relate to the Aerospatiale (Socata) TB20 (Trinidad) Series Aeroplanes, focus on ensuring the airworthiness of these aircraft. Section 105 of Part 39 mandates the inspection and replacement of cabin door catches for the TB20 and TB21 models (105.01). Specifically, AD/TB20/22 Amendment 1 requires that the cabin door catches be inspected and retired according to the technical requirements specified in DGAC AD 91-14-3 (A) R1 (105.02). This directive notes that the relevant Service Bulletin for this matter is Socata TB SB 58/1 (105.03). Compliance with this directive is crucial, as the previous compliance date was 3 October 1991, with this amendment becoming effective from 12 December 1991 (105.04). The obligations imposed by these regulations on the parties involved, primarily aircraft operators and maintenance personnel, are significant. Operators of the TB20 and TB21 models must ensure that the cabin door catches are inspected and, if necessary, replaced in accordance with the specified technical requirements. This involves meticulous adherence to the procedures outlined in DGAC AD 91-14-3 (A) R1 and Socata TB SB 58/1. Maintenance personnel must be adequately trained and familiar with these requirements to perform the inspections and replacements correctly. The regulations also necessitate that records of all inspections and replacements be maintained for future reference and audits by the Civil Aviation Safety Authority (CASA) (105.05). Failure to comply with these airworthiness directives can lead to serious consequences. The Civil Aviation Regulations 1998 stipulate that non-compliance with airworthiness directives can result in civil or criminal penalties. Specifically, operators who fail to adhere to the requirements of AD/TB20/22 Amendment 1 may face significant financial penalties. For example, under section 91.910 of the Civil Aviation Act 1988, the maximum penalty for contravening these regulations can be substantial, reflecting the critical nature of air safety. Additionally, CASA has the authority to take enforcement actions, including grounding the aircraft until compliance is achieved, which can have severe operational and financial implications for the operators (105.06).