Overview

The Civil Aviation Regulations 1998 (CAR 1998) are a comprehensive set of regulations enacted by the Parliament of Australia to ensure the safety and efficiency of civil aviation within the country. Part 39 of these regulations, specifically Section 106, provides a framework for issuing Airworthiness Directives (ADs) to address safety issues related to aircraft and aeronautical products. The AD in question, AD/MAKILA/5, pertains to exhaust pipe cracks in Turbomeca Turbine Engines of the Makila Series, particularly those incorporating a TU200 modified exhaust pipe. This directive was issued to rectify the problem of reported cracks in exhaust pipe attachment tabs, which, if left unaddressed, could lead to the exhaust pipe detaching and causing significant damage or harm. The AD outlines specific inspection and verification requirements to be conducted by authorised personnel and sets forth the compliance timeline to ensure these measures are implemented effectively. The Civil Aviation Safety Authority (CASA), as the delegate of the Commonwealth of Australia, issued this Airworthiness Directive to address the identified safety concerns. The policy objective behind this directive is to enhance the safety of civil aviation by mandating proactive measures to detect and rectify potential hazards in aircraft components. This directive became effective on 16 May 2002, following its notification in the Commonwealth of Australia Gazette on 24 April 2002. By enforcing these requirements, CASA aims to mitigate the risk of in-flight incidents caused by exhaust pipe failures, thereby protecting both the aircraft and its occupants.

Scope and Application

The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998 applies specifically to the Turbomeca Makila 1A, 1A1, and 1A2 series engines that have a TU200 modified exhaust pipe. This AD mandates actions to address the unsafe condition of exhaust pipe cracks, particularly at the attachment tabs connecting the ejector to the primary exhaust. Operators of aircraft equipped with the specified Makila engines must inspect the exhaust pipe for cracks, verify its correct position and attachment, ensure that the ejector does not contact the engine cowling, and conduct a vibration check in transient conditions as per the Turbomeca Makila Maintenance Manual. This directive applies on a national level throughout Australia and is effective from 16 May 2002, with specific compliance timelines set for inspections and checks immediately following the last flight of the day and before subsequent flights after any installation of an exhaust pipe. The AD references the DGAC Airworthiness Directive 2001-301(A) and was notified in the Commonwealth of Australia Gazette on 24 April 2002.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 106, contain an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA). This AD, numbered AD/MAKILA/5, pertains to Turbomeca Makila Series turbine engines, particularly the Makila 1A, 1A1, and 1A2 engines with a TU200 modified exhaust pipe (section 1). The directive mandates several actions to ensure the safe operation of these engines. These actions include inspecting the exhaust pipe for cracks, particularly at the attachment tabs connecting the ejector to the primary exhaust, verifying the correct positioning and attachment of the exhaust pipe, ensuring that the ejector does not come into contact with the engine cowling, and conducting a vibration check under transient conditions (section 2). These requirements are to be performed in accordance with the applicable Turbomeca Makila Maintenance Manual. The AD specifies that these inspections and checks must occur at certain times: following the last flight of the day, prior to each flight after an exhaust pipe installation, and prior to each flight after an exhaust pipe installation (section 3). The directive aims to mitigate the risk of exhaust pipe detachment, which could lead to collisions with the main rotor or the tail rotor, thereby preventing potential safety hazards. Failure to comply with this Airworthiness Directive can result in significant safety risks, as the directive is designed to address reported issues of exhaust pipe cracks. The non-compliance could potentially lead to serious consequences, including in-flight detachment of the exhaust pipe, which could endanger the aircraft and its occupants. The AD was issued to ensure that all relevant parties adhere strictly to the outlined procedures to maintain the airworthiness of the affected engines. The Civil Aviation Regulations 1998 enforce strict compliance with Airworthiness Directives such as this one. Any breach of the requirements outlined in the AD can lead to severe consequences, including potential criminal charges and fines. Specifically, under the Civil Aviation Act 1988, non-compliance with ADs can result in penalties, including substantial fines and imprisonment for individuals or corporations found guilty of contravening the regulations. The maximum penalties can vary but may include fines of up to $210,000 for individuals and $1,050,000 for corporations, alongside potential imprisonment terms for serious breaches. The enforcement of these penalties is critical in ensuring the highest safety standards in civil aviation.