COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 185 Series Aeroplanes
AD/CESSNA 185/20 Main Gear Wheel Assemblies 6/74
Applicability: All models 185 fitted with McCauley D-30063 wheel assemblies.
Requirement: Action in accordance with Cessna SL SE74-8 dated 17 May 1974 or later revisions. Compliance: 1. 1974 Models: Within 25 hours time in service after 31 July 1974.
2. 1973 Models: At the next main wheel disassembly or annual inspection whichever occurs first.
Overview
The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, provide a comprehensive framework to ensure the safety of civil aviation within the country. One of the key components of these regulations is Part 39, which includes the Schedule of Airworthiness Directives. These directives aim to address specific safety concerns related to particular aircraft models, ensuring that all aircraft meet the necessary safety standards. For instance, Airworthiness Directive AD/CESSNA 185/20 pertains to the Cessna 185 Series Aeroplanes and specifically targets issues with the main gear wheel assemblies. This directive applies to all models 185 fitted with McCauley D-30063 wheel assemblies, requiring compliance with specific maintenance actions outlined in Cessna Service Letter SL SE74-8 dated 17 May 1974 or any subsequent revisions. The policy objective is to ensure that these aircraft maintain their airworthiness by addressing potential safety issues in a timely and effective manner, thereby enhancing overall aviation safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, which includes the Civil Aviation Safety Authority Schedule of Airworthiness Directives, governs the operational standards for aircraft in Australia, ensuring safety and compliance with international standards. This regulation applies to all Cessna 185 series aeroplanes fitted with McCauley D-30063 wheel assemblies. It mandates that these aircraft must adhere to actions specified in Cessna Service Letter SE74-8 dated 17 May 1974 or any subsequent revisions. The geographic reach of this regulation is national, applying across the Commonwealth of Australia. There are no exclusions or exemptions explicitly stated in this directive, but the compliance requirements are specific to model years and operational hours, ensuring that the necessary actions are taken either within a defined period after a certain date or during routine inspections. The regulation extends its application through the incorporation of specific service letters, allowing for updates and amendments as necessary to maintain safety standards.
Key Provisions
The main sections of the Civil Aviation Regulations 1998, specifically PART 39 - 105, focus on the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. This legislation mandates the maintenance and airworthiness of certain aircraft. In this particular case, AD/CESSNA 185/20 pertains to Cessna 185 Series Aeroplanes, specifically those fitted with McCauley D-30063 wheel assemblies (1). The directive requires compliance with Cessna Service Letter SL SE74-8 dated 17 May 1974, or any later revisions, to ensure the safety and airworthiness of the aircraft.
The obligations imposed by this regulation require operators of Cessna 185 Series Aeroplanes to ensure that their main gear wheel assemblies meet the specified requirements. For 1974 models, compliance must be achieved within 25 hours of time in service after 31 July 1974 (2). For 1973 models, compliance must occur at the next main wheel disassembly or annual inspection, whichever comes first (3). This ensures that the aircraft's main gear wheel assemblies are regularly inspected and maintained according to the specified service letter and revisions.
Failure to comply with the provisions of AD/CESSNA 185/20 can result in significant consequences. Firstly, non-compliance may lead to the aircraft being deemed unairworthy, which can result in grounding and potential refusal of permission to fly. Secondly, the regulations stipulate that any breach of airworthiness directives can lead to enforcement actions by CASA. This may include fines, suspension or revocation of the aircraft's certificate of airworthiness, or other penalties as deemed appropriate by CASA. In severe cases, operators may face criminal charges, which could result in substantial fines and imprisonment. It is imperative that operators adhere to these requirements to ensure both the safety of the aircraft and the well-being of those onboard.