AD/PA-22/4 - Nose Wheel Mount - Stiffener Brace

Overview

The Civil Aviation Regulations 1998, under Part 39, provide a comprehensive framework for ensuring the safety and airworthiness of aircraft within Australia. Among the many legislative instruments and amendments, one notable piece is the Airworthiness Directive AD/PA-22/4, which was introduced to address a specific safety concern with Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes. This directive was enacted to ensure that nose wheel mounts on these aircraft models are reinforced to prevent structural failure, thereby enhancing overall flight safety. The Australian Government, through the Civil Aviation Safety Authority, introduced this directive to mandate immediate compliance with the specified structural modifications as outlined in Piper SL No. 180, targeting all affected models with serial numbers prior to 22-319. The policy objective of this directive is to mitigate the risk of accidents associated with nose wheel mount failures, thereby protecting passengers and crew and maintaining high safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the safety directives concerning the airworthiness of aircraft, including the Piper PA-22 (Tri-Pacer and Colt) series aeroplanes. This legislation applies to aircraft manufacturers, owners, operators, and maintenance service providers who are responsible for ensuring compliance with the issued airworthiness directives. The regulation mandates immediate compliance for specific models and serial numbers, as outlined in the directive AD/PA-22/4, which focuses on the reinforcement of the nose wheel mount with a stiffener brace. The requirement applies to all Piper PA-22 aircraft with serial numbers prior to 22-319, as referenced in Piper Service Letter No. 180. This regulation operates on a national level across Australia, ensuring that all persons and entities involved in the operation and maintenance of these aircraft adhere to the specified safety measures. There are no stated exclusions or exemptions in this directive, and compliance is mandatory for the affected aircraft.

Key Provisions

The Civil Aviation Regulations 1998, Part 39 - 105, specifically in relation to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives for Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes, include a directive concerning the nose wheel mount stiffener brace (AD/PA-22/4). This directive is applicable to models of the PA-22 with serial numbers (S/Nos.) prior to 22-319 as detailed in Piper Service Letter (SL) No. 180. The directive mandates that compliance must be achieved forthwith (s. 105.05(1)). Under this legislation, the primary requirement is that the specified Piper PA-22 aircraft models must be fitted with a stiffener brace on the nose wheel mount. This modification is necessary to ensure the safety and airworthiness of these aircraft. Owners or operators of these aircraft must ensure that the modification is carried out in accordance with the instructions provided in Piper SL No. 180 and must complete the compliance within the specified timeframe (s. 105.05(2)). Failure to comply with the provisions of this airworthiness directive can result in serious consequences. The Civil Aviation Regulations 1998 stipulate that non-compliance may lead to enforcement actions by CASA. The potential penalties for non-compliance can include fines, suspension, or revocation of the aircraft's certificate of airworthiness. In more severe cases, where the non-compliance results in an aviation accident or incident, criminal charges may be pursued against the responsible parties, which could lead to imprisonment (s. 105.05(3)-(4)). The specific maximum penalties are not detailed in the referenced section but are outlined in other parts of the Civil Aviation Act 1988.