AD/ML-M4/11 - Engine Mount - Inspection and Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, are designed to ensure the safety and regulation of civil aviation within the country. Specifically, Part 39 of these regulations includes Airworthiness Directives that address particular safety concerns for certain aircraft models. One such directive, AD/ML-M4/11, pertains to Maule M-4 Series Aeroplanes and focuses on the inspection and modification of the engine mount. This directive applies to all model M-4 aeroplanes with serial numbers ranging from 4 to 91, as documented in Maule SL No. 20. The policy objective of this regulation is to enhance the airworthiness of the specified aircraft by ensuring compliance within 100 hours of time in service following 31 October 1978. The directive aims to mitigate potential safety risks by mandating timely inspections and necessary modifications to the engine mount, thereby contributing to the overall safety and reliability of civil aviation operations in Australia.

Scope and Application

The Civil Aviation Regulations 1998, as amended, are a comprehensive set of rules governing civil aviation in Australia. Under Part 39 - 105, the Civil Aviation Safety Authority (CASA) issues specific directives to ensure aircraft safety, and one such directive is AD/ML-M4/11, which pertains to the Maule M-4 series aeroplanes. This directive specifically applies to all model M-4 aeroplanes with serial numbers ranging from 4 to 91, as outlined in Maule Service Letter No. 20. The directive mandates that inspections and necessary modifications to the engine mount must be carried out within 100 hours of time in service after 31 October 1978. This regulatory requirement is integral to ensuring that the specified aircraft maintain their airworthiness and comply with safety standards set by CASA. The directive applies nationally, reflecting the Commonwealth’s regulatory authority over aviation safety across Australia. No specific exclusions or exemptions are noted in the directive itself, though broader exemptions or thresholds may be outlined in other sections of the Civil Aviation Regulations.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, contains Airworthiness Directives (AD) which are mandatory safety rules issued by the Civil Aviation Safety Authority (CASA) to address safety concerns. The directive AD/ML-M4/11 pertains to the Maule M-4 Series Aeroplanes, focusing on the engine mount. According to section 10/78, this directive applies to all Maule M-4 aeroplanes with serial numbers (S/Nos.) between 4 and 91. The compliance requirement (section 10/78) mandates that the specified inspection and modification of the engine mount must be completed within 100 hours of time in service after 31 October 1978. Failure to comply with this directive could result in serious safety risks, thus the need for adherence within the stipulated timeframe. Entities and individuals governed by this directive are required to ensure that the engine mount of the affected Maule M-4 aeroplanes is inspected and modified as specified in the directive. This involves adhering to the detailed instructions provided in Maule Service Letter (SL) No. 20, which outlines the necessary procedures and specifications for the inspection and modification work. The compliance with this directive is not optional and must be meticulously followed to maintain the airworthiness of the aircraft. The directive aims to prevent potential structural failures and ensure the safe operation of the aircraft by addressing known safety issues. Failure to comply with the requirements of AD/ML-M4/11 may result in severe consequences. Under the Civil Aviation Regulations 1998, non-compliance can lead to enforcement actions by CASA. The potential penalties for non-compliance include fines, enforcement notices, or in more severe cases, the grounding of the aircraft. The exact penalties are not specified in the directive but can be severe, as CASA takes a strict stance on safety non-compliance. It is crucial for operators and maintenance personnel to be fully aware of the directive and ensure timely and proper compliance to avoid any adverse outcomes. Additionally, non-compliance with airworthiness directives can lead to civil and criminal liabilities. CASA has the authority to prosecute individuals or entities found in breach of the regulations, which can result in substantial fines and, in some cases, imprisonment. The seriousness of the potential penalties underscores the importance of adhering to the directive. Operators must ensure that all required inspections and modifications are carried out in a timely manner to avoid any legal repercussions. The overarching goal is to ensure the safety of all air operations, and compliance with AD/ML-M4/11 is a critical component of achieving this goal.