AD/ML-M5/5 Amdt 1 - Rudder Bar - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, are designed to ensure the safety of civil aviation in the country. Part 39 - 105 of these regulations specifically addresses airworthiness directives for various aircraft models, including the Maule M-5 Series Aeroplanes. The Airworthiness Directive (AD) AD/ML-M5/5 Amendment 1 pertains to the inspection and modification of rudder bars to prevent fatigue cracking, a significant safety concern identified for Maule M-5 Series Aeroplanes. The directive applies to all models with rudder bars that have not yet been modified according to Maule Aircraft Corporation Service Bulletin No. 2. The policy objective behind this directive is to enhance aircraft safety by reducing the risk of rudder bar fatigue cracking, thus avoiding the need for repetitive special inspections. The Civil Aviation Safety Authority, as the enforcing body, mandates that these inspections and modifications must be carried out within 100 hours of time in service after 31 October 1982. This directive aims to ensure compliance with safety standards and mitigate potential risks associated with rudder bar fatigue, thereby contributing to the overall safety of civil aviation operations.

Scope and Application

The Civil Aviation Safety Authority (CASA) provides specific directives under the Civil Aviation Regulations 1998, particularly in Part 39 - 105, which mandates airworthiness directives for various aircraft models. One such directive, AD/ML-M5/5 Amendment 1R, applies specifically to Maule M-5 series aeroplanes equipped with rudder bars that have not yet been modified according to Maule Aircraft Corporation Service Bulletin No. 2. This directive imposes a requirement for inspecting and modifying the rudder bar to prevent fatigue cracking and eliminate the need for repetitive special inspections. Compliance with this directive must be achieved within 100 hours of the aeroplane’s time in service after 31 October 1982, ensuring that all affected aircraft meet the specified safety standards. The directive’s scope is national, applying across the Commonwealth of Australia, and it extends to any person or entity operating these aircraft within the Australian jurisdiction. No specific exclusions or exemptions are noted in the text, and the directive’s application may be further refined through subordinate instruments as deemed necessary by CASA.

Key Provisions

The primary operative sections of the Civil Aviation Regulations 1998, specifically in relation to the Maule M-5 Series Aeroplanes, are outlined in AD/ML-M5/5Amdt 1 (section 10/82). This amendment mandates the inspection and modification of the rudder bar on all models of Maule M-5 series aeroplanes that have not yet been altered in accordance with Maule Aircraft Corporation Service Bulletin No. 2. This directive applies to all such models, necessitating that these aircraft be inspected and modified to prevent the possibility of fatigue cracking, which could otherwise lead to more serious structural issues. The obligations imposed by this regulation are straightforward yet critical for the safety of the aircraft. Aircraft operators must ensure that the rudder bar on their Maule M-5 series aeroplanes is inspected and modified as per the instructions outlined in Maule Aircraft Corporation Service Bulletin No. 2. This inspection and modification must be completed within the next 100 hours of flight time following 31 October 1982. Failure to comply with these requirements could result in the aircraft being deemed non-airworthy, potentially preventing it from being operated until the necessary work is performed. In terms of compliance, operators are expected to maintain records of the inspection and modification work carried out on their aircraft. These records should be kept in the aircraft's logbook or maintenance records and should include details such as the date of the inspection, the person who performed the modification, and any parts that were replaced or repaired. This documentation is essential for demonstrating compliance with the regulation and can be requested by the Civil Aviation Safety Authority during an audit or inspection. Failure to comply with the requirements of this airworthiness directive can lead to serious consequences. The Civil Aviation Safety Authority has the authority to ground non-compliant aircraft, which could prevent the aircraft from being used until the necessary modifications are made. In addition, operators who fail to comply with the directive may face penalties under the Civil Aviation Act 1988, which can include fines and, in severe cases, criminal charges. The maximum penalties for such offences can be substantial, reflecting the importance of adhering to these safety regulations.