AD/CESSNA 170/83 - Alternate Static Air Source Valve

Overview

The Civil Aviation Act 1988, enacted by the Parliament of Australia, provides the legislative framework for civil aviation safety in Australia, with a primary focus on ensuring the safety of air navigation. Pursuant to this Act, the Civil Aviation Safety Regulations 1998 were established to further delineate specific safety requirements. Section 39.001 of these regulations empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for particular types of aircraft or aeronautical products, with such directives being classified as disallowable instruments under section 46A of the Acts Interpretation Act 1901 and thus considered legislative instruments. This regulatory approach aligns with international obligations under Annex 8 to the Convention on International Civil Aviation, which mandates that the State of Design is responsible for the continuing airworthiness of aircraft types and must share necessary information with States of Registry to maintain airworthiness. Consequently, CASA, acting as Australia's national airworthiness authority, is required to issue corresponding Australian ADs when necessary, following the assessment of directives issued by the relevant State of Design. The ADs issued under these regulations are intended to ensure that Australian aircraft meet international safety standards, reflecting the policy objective of maintaining high levels of aviation safety in alignment with global conventions and practices.

Scope and Application

The Civil Aviation Act 1988, along with the Civil Aviation Safety Regulations 1998, empowers the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) that mandate the safety and airworthiness of certain aircraft types or aeronautical products. This legislation applies to the State of Registry of an aircraft in Australia, requiring compliance with ADs issued by CASA, which acts as the national airworthiness authority. These ADs are issued in response to airworthiness information provided by the State of Design, such as the United States Federal Aviation Administration (FAA), ensuring that Australian aircraft meet international safety standards. The ADs are legislative instruments under the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. Although these ADs are issued in line with international obligations under the Convention on International Civil Aviation, they are not subject to public consultation or a Regulatory Impact Statement. Instead, they are developed by CASA officials in the Airworthiness Engineering Branch, in line with the statutory requirements of the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 contain the provisions for the issue of airworthiness directives (ADs) (sections 98 and 39.001). These directives, as per subregulation 39.001(5), are legislative instruments and thus disallowable under the Acts Interpretation Act 1901. The State of Design is responsible for the continuing airworthiness of an aircraft type and must provide necessary information to ensure airworthiness, as stipulated in Annex 8 to the Convention on International Civil Aviation. The State of Registry is tasked with ensuring the continuing airworthiness of individual aircraft. In the case of Australia, the Civil Aviation Safety Authority (CASA) must assess ADs issued by the State of Design and, if necessary, issue corresponding Australian ADs to enforce the requirements of the original AD. The Civil Aviation Safety Regulations 1998 impose obligations on CASA to assess ADs issued by the State of Design and to issue Australian ADs when appropriate. This assessment and issuance process ensures compliance with international standards for continuing airworthiness. CASA, as Australia’s national airworthiness authority, must act upon the ADs issued by the relevant State of Design to maintain safety standards. The authority to issue these ADs is derived from the provisions of the Civil Aviation Act 1988 and is exercised under the oversight of the Manager, Systems and New Technologies in the Airworthiness Engineering Branch. Failure to comply with airworthiness directives can lead to serious safety implications. Although no consultation of the Australian public has taken place on these specific ADs, and they do not require a Regulatory Impact Statement, non-compliance with these directives can result in severe consequences. CASA may take enforcement action against operators who fail to adhere to the requirements of the ADs, which can include grounding of aircraft until compliance is achieved. The maximum penalties for non-compliance may vary but can include substantial fines and other regulatory sanctions as prescribed under relevant aviation laws. The ADs issued by CASA in response to the United States Federal Aviation Administration’s AD 2008-10-02 for various Cessna aircraft series are detailed in Schedule 1 of the explanatory statement. These ADs became effective on 13 May 2008 and mandate specific actions to ensure the continuing airworthiness of the affected aircraft types. CASA's role in issuing these ADs underscores the importance of international cooperation in maintaining aviation safety standards and highlights the necessity for all stakeholders to comply with these directives to ensure the safety of air navigation.