AD/B767/3 - Pneumatic Air Supply PRSOV Actuator Linkage - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Government, are a comprehensive set of rules governing the safety and operation of civil aviation within Australia. One particular aspect of these regulations is addressed through PART 39 - 105, which concerns the Civil Aviation Safety Authority’s (CASA) schedule of airworthiness directives. The purpose of these directives is to ensure that aircraft maintain their airworthiness through the implementation of specific safety measures and compliance with prescribed standards. The directive AD/B767/3, concerning the Boeing 767 Series Aeroplanes, is an example of how CASA mandates specific inspections and modifications to mitigate safety risks. This particular directive was introduced in response to a reported incident where a failure in the PRSOV actuator linkage led to high-pressure air exposure, causing significant damage and operational hazards. The policy objective behind this directive is to enhance aircraft safety by ensuring that any identified risks are promptly addressed and rectified, thereby maintaining the integrity of the aircraft and safeguarding passenger and crew welfare.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105, applies to all Boeing 767 series aeroplanes equipped with Pressure Regulating and Shut Off Valves Part Numbers 773288-4 and 773288-5, mandating compliance with Boeing Alert Service Bulletin 767-36A0015. This regulation is pertinent to operators, maintenance personnel, and any other entities involved in the upkeep and operation of the specified Boeing 767 models within Australia, ensuring adherence to the outlined safety directives. The regulation extends its jurisdiction across the entire Commonwealth, encompassing all states, territories, and national airspaces under Australian governance. There are no stated exclusions or exemptions within the scope of this directive, and compliance is mandatory without thresholds or conditions. The Civil Aviation Safety Authority has the authority to issue subordinate instruments to further refine or extend the application of this regulation, thereby maintaining stringent oversight and ensuring the highest safety standards are met in civil aviation operations.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, includes AD/B767/3, which pertains to Boeing 767 Series Aeroplanes. This directive addresses the inspection and modification of the Pneumatic Air Supply PRSOV Actuator Linkage (section 7/85 TX). It applies to all models equipped with Pressure Regulating and Shut-Off Valves (PRSOV) with part numbers 773288-4 and 773288-5. The directive mandates compliance with Boeing Alert Service Bulletin 767-36A0015, detailing the specific actions required to ensure airworthiness. Entities and individuals governed by these regulations must adhere to the inspection and modification requirements as outlined in the Boeing Alert Service Bulletin. This includes conducting thorough inspections of the PRSOV actuator linkage to detect any signs of wear, damage, or malfunction. Upon identifying any issues, the directive mandates modifications to prevent potential failures that could result in severe consequences, such as jamming of flight control surfaces and breakage of throttle controls. Ensuring adherence to these specifications is critical for maintaining the safety and reliability of the aircraft. Failure to comply with AD/B767/3 can result in significant legal and safety repercussions. The directive outlines potential offences that arise from non-compliance, including the possibility of aircraft being grounded until the required inspections and modifications are completed. This could lead to substantial operational disruptions and financial losses for airlines. Furthermore, CASA has the authority to enforce penalties for non-compliance, which can include fines and other regulatory actions. The seriousness of these potential consequences underscores the importance of strict adherence to the provisions outlined in the directive. The penalties for non-compliance with AD/B767/3 are significant, reflecting the critical nature of the safety measures in question. According to the Civil Aviation Regulations, the maximum penalties for breaches can include substantial fines, with the exact amount varying based on the severity and frequency of the offence. Additionally, persistent non-compliance may result in more severe consequences such as suspension or revocation of the aircraft's airworthiness certificate. Such penalties are designed to enforce the importance of adhering to safety directives and maintaining the highest standards of aircraft operation.