AD/T53/10 - Inlet Guide Vane Feedback Tube Assembly - Inspection

Overview

The Civil Aviation Regulations 1998, specifically Part 39, were enacted to regulate civil aviation safety in Australia. This legislation was introduced to address the need for consistent and rigorous standards in civil aviation operations, ensuring safety and compliance across the industry. One such regulation, AD/T53/10, pertains to the inspection of inlet guide vane feedback tube assemblies in AlliedSignal (Lycoming) Turbine Engines of the T53 Series. This Airworthiness Directive was enacted by the Civil Aviation Safety Authority (CASA), aiming to mitigate risks associated with the specified engines by requiring inspections of inlet guide vane feedback tube assemblies. The policy objective behind these regulations is to enhance the overall safety of civil aviation by addressing potential mechanical failures proactively. Compliance with these directives is mandatory for all relevant aircraft operators to ensure adherence to safety standards.

Scope and Application

The AlliedSignal (Lycoming) Turbine Engines - T53 Series Airworthiness Directive (AD) applies specifically to the T5313A and T5313B engines manufactured prior to serial number LEO7590, and to the T53-L-13A and T53-L-13B engines produced before serial number LE23885. This directive is part of the broader framework established under the Civil Aviation Regulations 1998, and it pertains to the inspection of the Inlet Guide Vane Feedback Tube Assembly, as detailed in AD/T53/10 1/86. Compliance with this directive is mandatory for all affected engines and must be carried out in accordance with either Lycoming Field Service Bulletin No. 0029 or AD/LYC-T/11. The directive is issued under the authority of the Civil Aviation Safety Authority and has a jurisdictional reach that encompasses all civil aviation activities within Australia, ensuring that the specified inspections are performed to maintain airworthiness standards.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, PART 39 - 106, specifically AD/T53/10, require the inspection of the Inlet Guide Vane Feedback Tube Assembly for AlliedSignal (Lycoming) Turbine Engines - T53 Series. This applies to all T5313A and T5313B engines before serial number LEO7590, and all T53-L-13A and T53-L-13B engines before serial number LE23888 (Section 1). The regulation mandates compliance with either Lycoming Field Service Bulletin No. 0029 or AD/LYC-T/11 (Section 1). The Act imposes several obligations on the parties or entities it governs. It mandates that all specified engines must undergo an inspection of their Inlet Guide Vane Feedback Tube Assembly as outlined in the referenced requirement documents. Operators of these engines must ensure that the inspections are carried out in accordance with the specified procedures and standards to maintain airworthiness (Section 1). Additionally, records of these inspections must be maintained and made available for review by the Civil Aviation Safety Authority upon request. Failure to comply with the AD/T53/10 directive can result in significant consequences. Firstly, there are potential civil penalties which can be imposed for non-compliance with the airworthiness directives (Section 2). The maximum penalties for such breaches are stipulated under the Civil Aviation Act 1988 and can include substantial fines and other sanctions. Additionally, continued operation of non-compliant engines poses a risk to flight safety, which could lead to criminal charges if negligence or wilful disregard of the regulations is established. Therefore, adherence to the directive is not only a legal requirement but also a critical safety measure.