Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, establish the legal framework for civil aviation safety in the country. These regulations address the need for ensuring the safety and airworthiness of aircraft operating within Australian airspace, aiming to mitigate risks associated with air travel. Part 39, specifically, deals with airworthiness directives, which are legally enforceable rules designed to correct safety deficiencies in aircraft. Among these, AD/INST/19 targets ARC PA 500A actuators in Cessna aircraft, aiming to ensure the safe operation of autopilots, automatic flight control systems, and yaw dampers. The policy objective is to maintain and enhance the safety standards of civil aviation through the implementation of mandatory inspections and modifications of specified aircraft components. The instrument AD/INST/19 was introduced to address safety concerns related to ARC PA 500A actuators in certain Cessna aircraft models, specifically those with serial numbers 6265 and below. This directive mandates inspections of these actuators within 100 hours of time in service after 30 July 1976 and subsequently at intervals not exceeding 100 hours until the actuators are modified. The modifications must be completed before 30 April 1977. This regulatory action is aimed at ensuring the continued airworthiness and safety of the affected aircraft, thereby protecting passengers and crew and maintaining the integrity of Australia's civil aviation safety standards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 107, applies to the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, governing the safety standards and requirements for aircraft in Australia. This particular legislative instrument, AD/INST/19, targets ARC PA 500A actuators serial numbers 6265 and below, used in Cessna Autopilots, Automatic Flight Control Systems (AFCS), and Yaw Dampers. The Act mandates that these components must adhere to specific inspection and modification directives to ensure airworthiness. The regulations require inspections within 100 hours of service following 30 July 1976, with subsequent inspections occurring at intervals not exceeding 100 hours until the actuators are modified. Additionally, the modifications must be completed before 30 April 1977. The referenced documents for compliance include ARC Field Engineering Service Bulletin No. 181, Cessna Avionics Service Letter AV75-10, or FAA AD 76-04-03.6/76. The jurisdictional reach of this legislation is nationwide, applying uniformly across the Commonwealth of Australia to ensure consistent safety standards for aircraft operations.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 107, outlines the requirements and procedures related to airworthiness directives. Section AD/INST/19, which concerns ARC PA 500A Actuators in Cessna Auto Pilot, AFCS, and Yaw Damper systems, mandates that these components be inspected and, if necessary, modified. The directive applies to ARC PA 500A actuators with serial numbers 6265 and below. The document references for compliance include ARC Field Engineering SB No. 181, Cessna Avionics SL AV75-10, or FAA AD 76-04-03.6/76. Under the Civil Aviation Regulations, the primary requirement for the specified ARC PA 500A actuators is an inspection within 100 hours of time in service after 30 July 1976. This initial inspection is followed by subsequent inspections at intervals not exceeding 100 hours of time in service until the actuator is modified. If the inspection reveals any issues, a modification must be carried out before 30 April 1977. These requirements are designed to ensure the continued airworthiness and safety of the aircraft systems involved. Entities governed by these regulations must ensure that the specified ARC PA 500A actuators are inspected and, if necessary, modified according to the stipulated timelines. Compliance involves following the procedures outlined in the referenced documents: ARC Field Engineering SB No. 181, Cessna Avionics SL AV75-10, or FAA AD 76-04-03.6/76. Failure to comply with these directives can result in significant safety risks, as the actuators are integral to the operation of the Cessna Auto Pilot, AFCS, and Yaw Damper systems. Non-compliance with the airworthiness directives specified in the Civil Aviation Regulations can lead to various civil or criminal consequences. While the specific offences and penalties are not detailed in the provided text, regulatory breaches generally result in enforcement actions by the Civil Aviation Safety Authority (CASA). These actions can include fines, the grounding of aircraft, or other penalties as deemed necessary to enforce compliance with safety regulations. The severity of the penalties may depend on the nature and extent of the non-compliance.