AD/TB 200/2 - Exhaust System

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a critical framework governing the safety and operational standards of civil aviation within the country. Among these regulations, Part 39 specifically addresses Airworthiness Directives to ensure that aircraft maintain a certain standard of safety and reliability. One such directive, AD/TB 200/2, pertains to the Aerospatiale (Socata) TB 200 Series Aeroplanes, specifically targeting the exhaust system. This directive was introduced to address a problem identified with the original design of the exhaust system, which had a tendency to come loose in service, potentially leading to hazardous conditions. The policy objective behind AD/TB 200/2 is to mandate modifications to the exhaust system, ensuring it adheres to updated specifications detailed in SOCATA Service Bulletin SB 10-074 78, Amendment 1, to prevent such failures and maintain airworthiness. The directive became effective on 7 October 1999, requiring compliance within 50 hours of time in service from that date. The modifications specified include replacing the double plain nut locking of the exhaust pipe connections with single self-locking nuts and updating the cylinder exhaust mount stud plain nuts and lock washers to self-locking nuts. This change responds directly to reports of the original exhaust system becoming loose, thus ensuring the safety and reliability of the aircraft. This regulation underscores the Civil Aviation Safety Authority’s commitment to maintaining high safety standards and addressing specific design issues that could compromise flight safety.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandates the application of Airworthiness Directives issued by the Civil Aviation Safety Authority (CASA) for Aerospatiale (Socata) TB 200 Series Aeroplanes. This legislation applies to aircraft with serial numbers ranging from 1 through 1619 that do not comply with the requirements of SOCATA Service Bulletin SB 10-074 78, Amendment 1. The directive aims to prevent failures of the exhaust system by requiring modifications that align with the specified bulletin. The directive mandates compliance within 50 hours of time in service from the directive's effective date, which is 7 October 1999. The directive refers to DGAC Airworthiness Directive 94-067 (A) R1, and its scope is nationwide, impacting all operators of the specified aircraft within Australian jurisdiction. The regulation does not explicitly state any exclusions or thresholds, but it is understood that it applies to all such aircraft operating within Australia. The directive's application can be extended or restricted through subordinate instruments issued by CASA.

Key Provisions

The key operative sections of the AD/TB 200/2 Airworthiness Directive (paragraph 105) focus on ensuring the safety of Aerospatiale (Socata) TB 200 Series Aeroplanes by mandating modifications to the exhaust system. Specifically, section (1) identifies the applicability of the directive to TB200 aircraft with serial numbers ranging from 1 through 1619 that do not yet comply with the requirements of SOCATA Service Bulletin SB 10-074 78, Amendment 1. Section (2) outlines the requirement to modify the exhaust system to prevent failures, stipulating adherence to the provisions of SOCATA Service Bulletin SB 10-074 78, Amendment 1. This modification involves replacing the double plain nut locking of the exhaust pipe connections with single self-locking nuts and replacing the cylinder exhaust mount stud plain nuts and lock washers with self-locking nuts. The directive notes a reference to DGAC Airworthiness Directive 94-067 (A) R1 for additional context (section 3). Compliance with this directive must be achieved within 50 hours of time in service from the effective date, which is 7 October 1999 (section 4). The AD/TB 200/2 Airworthiness Directive imposes several obligations on the relevant parties, primarily focusing on the modification of the aircraft's exhaust system to meet specified safety standards. Owners and operators of the affected TB200 aircraft must ensure that the modifications outlined in SOCATA Service Bulletin SB 10-074 78, Amendment 1 are carried out promptly. This includes replacing the double plain nut locking of the exhaust pipe connections with single self-locking nuts and replacing the cylinder exhaust mount stud plain nuts and lock washers with self-locking nuts. These modifications are crucial to prevent the exhaust system from coming loose during service, which could lead to serious safety issues. The directive is clear that these changes must be implemented within 50 hours of time in service from the effective date of the directive. Failure to comply with the AD/TB 200/2 Airworthiness Directive may result in significant consequences. Under the Civil Aviation Regulations 1998, non-compliance with airworthiness directives can lead to civil penalties, including fines and potential enforcement actions. Furthermore, operating an aircraft that does not meet the required airworthiness standards can result in the aircraft being deemed unsafe to fly, leading to grounding and operational disruptions. In severe cases, continued operation of a non-compliant aircraft could also result in criminal charges, with potential penalties including substantial fines and imprisonment for those responsible. The specific penalties for breaches of the Civil Aviation Regulations are detailed in relevant sections of the Act, with maximum penalties varying based on the severity and circumstances of the breach.