Overview

The Civil Aviation Regulations 1998 (CAR 1998) was enacted to ensure the safety and efficiency of civil aviation in Australia. This piece of legislation provides a comprehensive framework for the regulation of civil aviation, including airworthiness directives such as AD/Z-242L/5. This Airworthiness Directive was issued by the Civil Aviation Safety Authority (CASA) to address a specific safety concern identified in the Z 242L series aeroplanes, namely the potential loosening of adhesive joints in the engine oil system plumbing that could obstruct oil flow to the engine, resulting in engine failure. The directive mandates specific actions, including the inspection of the engine oil system plumbing and amendments to the Z 242L Maintenance Manual, to be taken within prescribed timeframes to mitigate this safety risk. This directive was issued under the authority of the Civil Aviation (Airworthiness of Aircraft) Regulations 1998 and aims to ensure the continued airworthiness of the affected aircraft by correcting the identified unsafe condition.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued an Airworthiness Directive (AD) under the Civil Aviation Regulations 1998 (CAR 1998) to address safety concerns related to the engine oil system plumbing of the Moravan Zlin Z 242L series aeroplanes. This AD applies specifically to all Z 242L series aircraft and mandates inspections and amendments to rectify the loosening of the "Tee" and "Elbow" assembly parts in the engine oil system, as specified in Moravan Mandatory Bulletin Z 242L/42a. The directive requires inspections within 10 hours of aircraft time in service from the effective date and subsequent periodic inspections, and amendments to the Z 242L Maintenance Manual no later than the next scheduled aircraft periodic inspection. The directive is effective from 29 January 2003 and is intended to prevent potential engine failure due to obstructed oil flow. This legislation operates on a national level within the Commonwealth of Australia and is notified in the Commonwealth of Australia Gazette, thereby ensuring its nationwide applicability.

Key Provisions

The key operative sections of the Airworthiness Directive (AD) for the Moravan Zlin Z 242L series Aeroplanes, particularly concerning the engine oil system plumbing, are set out in the "Applicability," "Requirement," and "Compliance" sections. Specifically, section (a) of the applicability indicates that the directive applies to all Z 242L series aircraft. Section (b) of the requirements specifies two primary actions: firstly, inspecting the engine oil system plumbing for any evidence of loosening of the designated "Tee" and "Elbow" assemblies, and secondly, amending the Z 242L Maintenance Manual in accordance with Moravan Mandatory Bulletin Z 242L/42a. Section (c) outlines the compliance timeline, with the inspection needing to be conducted within 10 hours of aircraft time in service from the directive's effective date and thereafter at each scheduled aircraft periodic inspection. The amendment to the maintenance manual must be completed by the next scheduled aircraft periodic inspection. The AD imposes specific obligations on the parties governed by it. Primarily, it mandates that the engine oil system plumbing of all Z 242L series aircraft must be inspected for loosening of the specified parts and that any identified issues must be addressed according to the instructions provided. Furthermore, the maintenance manual must be updated to reflect the necessary changes to accommodate these safety requirements. The AD stipulates that these actions must be carried out within prescribed timelines to ensure the continued airworthiness and safety of the aircraft. Failure to comply with the requirements set out in the AD can result in significant consequences. While the Civil Aviation Regulations 1998 do not explicitly detail specific offences, penalties, or civil/criminal consequences in this context, non-compliance with ADs generally can lead to severe repercussions. These can include the grounding of the aircraft, legal action against the operator or owner, and potential financial penalties. The overarching goal is to ensure that all necessary actions are taken promptly to prevent unsafe conditions that could compromise the safety of the aircraft and its occupants.