AD/B767/79 - Thrust Reverser Control System

Overview

The Civil Aviation Regulations 1998 (Cth), specifically in Part 39 - 105, establish the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, which includes detailed safety requirements for various aircraft types, such as the Boeing 767 series aeroplanes. The AD/B767/79, issued on 10 September 1994, pertains to the thrust reverser control system of Boeing 767 aircraft equipped with Pratt and Whitney PW4000 series engines. This directive was enacted to address a critical safety issue, ensuring the integrity of the fail-safe features of the thrust reverser system to prevent inadvertent deployment during flight. The objective of this regulation is to align with the technical requirements set out in the Federal Aviation Administration's AD 94-12-10, mandating compliance by 15 September 1994, unless previously accomplished. The Civil Aviation (Safety) Regulations 1998 were established by the Parliament of Australia under the Civil Aviation Act 1988, with the overarching goal of ensuring the highest safety standards in civil aviation operations. This particular regulation is aimed at maintaining the airworthiness of Boeing 767 series aircraft by enforcing strict adherence to the technical specifications provided by the FAA, thereby mitigating the risk of in-flight thrust reverser deployment and enhancing overall aviation safety.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Boeing 767 series aeroplanes equipped with Pratt and Whitney PW4000 series engines. This legislation mandates compliance with the technical requirements set forth in the Federal Aviation Administration's (FAA) AD 94-12-10 to maintain the integrity of the fail-safe features of the thrust reverser system, thereby preventing inadvertent deployment during flight. The regulations are applicable across the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority (CASA). The thrust reverser control system directive ensures that all affected aircraft must comply with the specified actions unless these have already been completed as detailed in the Requirement Document, with the compliance deadline set as 15 September 1994. This regulation does not explicitly mention any exclusions, exemptions, or thresholds, but it is understood that adherence to the FAA's AD is mandatory for all applicable aircraft within the Australian jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, include the Schedule of Airworthiness Directives (ADs) which mandate certain actions for maintaining the airworthiness of aircraft. One such directive is AD/B767/79, which pertains to the Boeing 767 series aeroplanes equipped with Pratt and Whitney PW4000 series engines. This directive was issued to ensure the integrity of the fail-safe features of the thrust reverser system, aiming to prevent the inadvertent deployment of a thrust reverser during flight (Section 105). Compliance with this directive is crucial for the safety and reliability of these aircraft. Under this AD, the primary requirement is that the technical specifications outlined in the Federal Aviation Administration (FAA) AD 94-12-10 must be followed. This directive specifies the necessary actions to maintain the safety of the thrust reverser control system. Operators of Boeing 767 series aircraft with the relevant engines must ensure that these actions are carried out unless they have already been completed in accordance with the requirements specified in the directive's document. The directive became effective on 15 September 1994, and any aircraft not compliant with these specifications by this date must rectify the issues to maintain their airworthiness (Section 105). The obligations imposed on the operators of these aircraft include ensuring that the thrust reverser system is inspected and maintained according to the AD/B767/79 directive. This involves adhering to the technical requirements and ensuring that any necessary modifications or repairs are completed by qualified personnel. Operators must keep records of compliance with this directive, demonstrating that the aircraft meet the specified safety standards. Furthermore, these operators are responsible for ensuring that their maintenance practices align with the FAA AD 94-12-10, which includes specific instructions on the inspection, repair, and testing of the thrust reverser control system. Failure to comply with the provisions of AD/B767/79 can result in significant consequences. Under the Civil Aviation Act 1988, non-compliance with airworthiness directives can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Penalties for non-compliance may include fines, which can be substantial, as well as potential legal action against the operators or individuals responsible for the oversight of the aircraft. In severe cases, CASA has the authority to suspend or revoke the aircraft's certificate of airworthiness, which could result in the grounding of the aircraft until the necessary actions are taken to meet the regulatory requirements. Therefore, it is imperative for operators to take this directive seriously and ensure full compliance to avoid these serious repercussions.