AD/CESSNA 500/6 - Oxygen Mask Door Actuating Piston - Replacement - CANCELLED

Overview

The Civil Aviation Act 1988, enacted by the Commonwealth Parliament, aims to regulate civil aviation in Australia to ensure the safety and efficiency of air navigation. This legislation provides a framework for the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) under regulation 39.001 of the Civil Aviation Safety Regulations 1998. ADs, which are legislative instruments, are intended to maintain the continuing airworthiness of aircraft and aeronautical products. In alignment with international standards set by the Convention on International Civil Aviation, the State of Design has the primary responsibility for ensuring the airworthiness of an aircraft type, while the State of Registry is responsible for the airworthiness of individual aircraft. In the case of Australian AD/CESSNA 500/6, which affected all Cessna 500 model aeroplanes, CASA has assessed and subsequently cancelled the directive due to the resolution of the unsafe condition it was addressing, with no need for a replacement AD. The cancellation of the AD/CESSNA 500/6 was made in accordance with Australia's obligations under the Convention on International Civil Aviation, and therefore, no public consultation or Regulatory Impact Statement was required. The AD was issued by the Manager, Systems and New Technologies, in the Airworthiness Engineering Group, on behalf of CASA, as stipulated by subsection 84A(2) of the Civil Aviation Act 1988. This action demonstrates CASA's commitment to maintaining high safety standards in Australian civil aviation by responding to international obligations and ensuring the safety of aircraft in operation.

Scope and Application

The Civil Aviation Safety Regulations 1998, under the Civil Aviation Act 1988, allow the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. This regulatory mechanism is integral to ensuring the continuing airworthiness of aircraft within Australia, aligning with the requirements outlined in Annex 8 to the Convention on International Civil Aviation. ADs are legislative instruments that fall under the purview of the Legislative Instruments Act 2003 and are used by most ICAO Contracting States to communicate continuing airworthiness information. The State of Registry of an aircraft holds the responsibility for ensuring the aircraft’s continuing airworthiness, in accordance with international obligations. CASA has the authority to issue, amend, or cancel ADs, as demonstrated by the cancellation of AD/CESSNA 500/6 for all Cessna 500 model aeroplanes, effective from 25 September 2008, due to the resolution of the unsafe condition previously identified. This action reflects Australia's commitment to international aviation safety standards and the continuous improvement of airworthiness requirements.

Key Provisions

The Civil Aviation Act 1988 and its associated regulations, particularly the Civil Aviation Safety Regulations 1998, provide the legislative framework for ensuring the safety of air navigation in Australia. Under section 98 of the Act, the Governor-General can make regulations that serve the interests of aviation safety, and regulation 39.001 specifically empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for certain types of aircraft or aeronautical products. These directives, as outlined in subregulation 39.001(5), are considered disallowable instruments under the Acts Interpretation Act 1901, and thus fall under the purview of the Legislative Instruments Act 2003 as legislative instruments. The obligations imposed by these provisions include a duty on the State of Design, which is the country where the aircraft was designed, to ensure the continuing airworthiness of the aircraft type by providing necessary information to the State of Registry. The State of Registry, which is the country where the aircraft is registered, must then develop or adopt requirements to maintain the aircraft's airworthiness. CASA, acting on behalf of the Australian government, has the responsibility to issue ADs to address any unsafe conditions that may affect the airworthiness of aircraft within Australia. For instance, CASA has issued and subsequently cancelled AD/CESSNA 500/6, which pertained to all Cessna 500 model aeroplanes, due to the resolution of the unsafe condition identified in the AD. Failure to comply with airworthiness directives can result in significant civil and criminal consequences. The specific offences, penalties, and consequences for non-compliance are detailed in the Civil Aviation Act 1988 and associated regulations. Non-compliance with an airworthiness directive can lead to fines, imprisonment, or both, depending on the severity of the breach. For example, under section 48 of the Act, any person who contravenes an airworthiness directive can be fined up to $22,200 for an individual or $111,000 for a body corporate, and in more severe cases, imprisonment for up to 2 years. Additionally, CASA has the authority to take enforcement actions, including grounding aircraft or denying airworthiness certificates if safety requirements are not met.