AD/CHA/16 - Front Pilots Seat

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safety and efficiency of civil aviation within Australia. These regulations, specifically within Part 39 - 105, include the Schedule of Airworthiness Directives that mandate certain safety standards and maintenance procedures for various aircraft models. The particular legislative instrument, F2006B08542, addresses a safety concern related to the front pilot’s seat in certain American Champion (Aeronca, Bellanca) series aeroplanes. The objective is to mitigate risks associated with potential structural failures in the seat's lower frame side tube members by requiring inspections and, if necessary, modifications to ensure the continued airworthiness of the aircraft. Compliance with these directives is crucial to maintaining the safety standards set by CASA.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to the safety directives concerning American Champion (Aeronca, Bellanca) series aeroplanes, particularly focusing on the front pilot’s seat. The regulation mandates that specific models of these aeroplanes, namely the 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC, with serial numbers falling within particular ranges and those equipped with an adjustable front seat installed via Bellanca Kit No 252, adhere to the outlined safety measures. These measures involve inspecting the lower frame side tube members for any signs of permanent deformation or cracks and modifying the seat to include reinforcement in the designated areas, in accordance with a scheme approved by the Secretary. The requirement for compliance stipulates inspections within 100 hours of service after 31 January 1977 and subsequently at intervals not exceeding 100 hours, while the reinforcement modifications must be completed within 300 hours of service post 31 January 1977. This regulation applies nationally under the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, incorporates the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. This particular directive, AD/CHA/16, pertains to the front pilot's seat of certain American Champion (Aeronca, Bellanca) series aeroplanes, including models 7ECA, 7GCAA, 7GCBC, 7KCAB, 8KCAB, and 8GCBC, as well as any aeroplanes in which the adjustable front seat has been installed using Bellanca Kit No 252. The directive applies to specific serial numbers within these models, as outlined in the applicability section (Section 1). The main requirements of this directive (Section 2) include two primary actions. Firstly, operators must inspect the left-hand (LH) and right-hand (RH) side lower seat frame side tubes for evidence of cracks or permanent deformation in the area just forward of the side brace and side tube junctions. This inspection should be carried out within 100 hours of time in service after 31 January 1977, and then at intervals not exceeding 100 hours of time in service until the seat is modified. Secondly, operators must modify the seat by installing reinforcement in the area of the side brace and side tube junctions, in accordance with a scheme approved by the Secretary. This modification must be completed within 300 hours of time in service after 31 January 1977. The seat cushion must be removed to facilitate the inspection, and Bellanca Kit No 253 is an acceptable means of reinforcement (Note 1 and Note 2). The obligations and requirements imposed by this Act (Section 3) on the parties or entities it governs are primarily concerned with ensuring the airworthiness of the specified aeroplanes. Operators must adhere to the inspection and modification requirements outlined in the directive. Failure to comply with these requirements could result in the aeroplane being deemed unairworthy, which could lead to grounding and potential legal consequences. Additionally, operators must ensure that any modifications or repairs are carried out by authorised personnel and that all work is properly documented and recorded. Failure to comply with the provisions of this directive (Section 4) may result in civil or criminal penalties. While the specific penalties are not detailed in the provided text, it is known that non-compliance with airworthiness directives can lead to significant consequences, including fines, imprisonment, or both, depending on the severity of the breach. The maximum penalties for such offences can be substantial, reflecting the importance of maintaining the airworthiness of aircraft to ensure the safety of all those involved. Operators must therefore take the requirements of this directive seriously and ensure full compliance to avoid any potential legal repercussions.