AD/PA-20/12 - Fuselage Structure, Upper Cabin - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, serve to ensure the safety and efficiency of aviation operations within the country. This extensive regulatory framework addresses various aspects of civil aviation, including the issuance of airworthiness directives to ensure the safety of aircraft. One such directive, AD/PA-20/12, pertains to the Piper PA-20 (Pacer) series aeroplanes, specifically focusing on the fuselage structure in the upper cabin area. This directive was introduced to address issues related to corrosion and the integrity of protective coatings in the specified fuselage components. The directive mandates a thorough visual inspection of these areas, ensuring that the structural integrity of the aircraft is maintained to prevent potential safety hazards. The objective is to safeguard the safety of all those involved in civil aviation by enforcing regular inspections and maintenance protocols. The Civil Aviation Regulations 1998 are overseen by the Civil Aviation Safety Authority (CASA), which is responsible for implementing and enforcing these regulations. The policy objective behind AD/PA-20/12 is to mitigate the risks associated with structural corrosion and coating degradation in the specified area of Piper PA-20 aeroplanes, thereby ensuring that these aircraft remain airworthy and compliant with safety standards. The directive aims to protect the integrity of the aircraft's structural components, ultimately contributing to the overall safety of civil aviation operations in Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the airworthiness directives for civil aviation in Australia, including the requirements for Piper PA-20 (Pacer) Series Aeroplanes as stipulated by the AD/PA-20/12 directive. This Act applies to all models of the Piper PA-20 aeroplane series and mandates a specific inspection protocol for the fuselage structure, particularly the upper cabin area. Operators, owners, and maintenance personnel of these aircraft must ensure that the interior trim is removed to expose the fuselage lateral members, front and rear spar carry-through structures, and upper longerons in the cabin area, which must then be visually inspected for corrosion and the condition of protective coatings. The regulation requires an initial inspection to be conducted before 1 January 1979 unless the aeroplane has been inspected since 1 July 1977, and subsequent inspections must be carried out at intervals not exceeding three years. This regulation is enforced by the Civil Aviation Safety Authority and applies nationally across Australia, with no stated exclusions or exemptions in the provided text. Any further detail or extension of the application of these regulations may be provided through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, particularly Part 39 - 105 Schedule of Airworthiness Directives for Piper PA-20 (Pacer) Series Aeroplanes, detail specific requirements for maintaining the airworthiness of these aircraft. Section 11/77 mandates that all models of the Piper PA-20 series must undergo a thorough inspection of their fuselage structure. This involves removing the interior trim to expose the lateral members at the top of the windshield, the front and rear spar carry-through structures, and the upper longerons in the cabin area. Once exposed, these structural components must be visually inspected for any signs of corrosion and the condition of the protective coatings. These obligations necessitate that the aircraft operators or owners ensure the aircraft meet the specified inspection requirements. Specifically, an initial inspection must be conducted before 1 January 1979, unless the aircraft has been inspected since 1 July 1977. Following this initial inspection, subsequent inspections must occur at intervals not exceeding three years. This requirement is crucial to maintain the structural integrity of the aircraft and ensure ongoing airworthiness. Failure to comply with these airworthiness directives can result in severe consequences. Section 11/77 of the AD/PA-20/12 highlights the importance of adhering to the specified inspection intervals and conditions. Any breach of these provisions may lead to penalties under the Civil Aviation Act 1988. The penalties can include substantial fines and, in severe cases, the grounding of the aircraft until the required inspections are conducted and compliance is achieved. Non-compliance not only poses a risk to the safety of the aircraft but also to the passengers and crew on board. Therefore, it is imperative that all parties governed by these regulations strictly adhere to the stipulated requirements to avoid potential legal and safety repercussions.