AD/AL 250/56 Amdt 1 - Engine Quick Disconnect Magnetic Plugs - Inspection of Lockpins and Slots for Wear

Overview

The Civil Aviation Regulations 1998, specifically Part 39, Section 106, establishes a Schedule of Airworthiness Directives designed to maintain and ensure the safety of aircraft operations within Australia. This particular legislative instrument, F2006B02268, was enacted to address issues associated with the maintenance and operational checks of Allison Turbine Engines, specifically the 250 Series. The problem it aimed to address was the potential for wear on the quick disconnect magnetic plugs which, if undetected, could compromise the safety and reliability of the engine during flight. The Civil Aviation Safety Authority (CASA), acting under the authority of the Australian Parliament, introduced this directive to ensure that all relevant aircraft engines undergo regular inspections to mitigate such risks. The policy objective is to maintain the highest standards of airworthiness, thereby safeguarding the integrity of civil aviation operations.

Scope and Application

The Civil Aviation Safety Authority (CASA) has issued an Airworthiness Directive (AD) under the Civil Aviation Regulations 1998, specifically targeting Allison 250 Series turbine engines fitted with quick disconnect magnetic plugs. This directive applies to all Allison 250 Series engines, including models such as the 250-C18, 250-C20, 250-B15GTP, and others, as listed in the AD. The directive mandates that an operational check on the magnetic plugs must be conducted to ensure they are functioning correctly, reflecting amendments in the manufacturer's documentation. The scope of this directive is explicitly aimed at maintaining the airworthiness of these engines, ensuring safety standards are upheld within the aviation industry. The directive applies nationally, covering all operators and entities within Australia, and is subject to compliance with the specified requirements in the Requirement Document. The directive does not specify any exclusions or exemptions, implying that all applicable engines must adhere to the mandated inspections. Subordinate instruments may further detail implementation and compliance procedures.

Key Provisions

The key operative sections of the Civil Aviation Regulations 1998, particularly in PART 39 - 106, focus on the safety and airworthiness of aircraft components. Specifically, the Schedule of Airworthiness Directives, such as AD/AL 250/56, mandates strict requirements for Allison Turbine Engines - 250 Series (section 1). This regulation requires the inspection of lockpins and slots for wear in the engine's quick disconnect magnetic plugs. The applicability of this directive extends to all Allison 250 Series engines that are fitted with quick disconnect magnetic plugs, including various engine models such as the Allison 250-C18, Allison 250-C20, Allison 250-B15GTP, and others (section 2). Compliance with this directive must be achieved in accordance with the specified Requirement Document, which has been updated to reflect the latest revisions from the manufacturer (section 3). The obligations imposed by this Act on the relevant parties, such as aircraft operators and maintenance organisations, are significant. They must ensure that all inspections and maintenance activities pertaining to the quick disconnect magnetic plugs are performed meticulously, adhering to the updated procedures outlined in the Requirement Document (section 4). This includes conducting operational checks to verify the proper function of the magnetic plugs, as mandated by the revised manufacturers document. The goal is to maintain the airworthiness of the aircraft by preventing any potential failures or malfunctions arising from wear in the lockpins and slots (section 5). Non-compliance with the provisions of this directive can lead to severe consequences. Under the Civil Aviation Regulations 1998, breaches of airworthiness directives can result in both civil and criminal penalties. Civil penalties may include fines, while criminal penalties could lead to imprisonment, reflecting the serious nature of ensuring aircraft safety (section 6). The maximum penalties for such breaches are not explicitly stated in the directive but are in line with the broader regulatory framework, which can impose significant fines and imprisonment terms for serious violations of aviation safety regulations (section 7). It is crucial for all parties involved to strictly adhere to these directives to avoid facing these serious repercussions.