AD/PA-36/20 Amdt 2 - Engine Mount Attach Brackets - Inspection and Modification

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CIVIL AVIATION ACT 1988

CIVIL AVIATION SAFETY REGULATIONS 1998

ISSUE OF AIRWORTHINESS DIRECTIVE

Under section 98 of the Civil Aviation Act 1988, the Governor-General may make regulations for the purposes of the Act and in the interests of the safety of air navigation.  Under regulation 39.001 of the Civil Aviation Safety Regulations 1998, the Civil Aviation Safety Authority (CASA) may issue airworthiness directives (ADs) for kinds of aircraft or aeronautical products.  Subregulation 39.001(5) of the Civil Aviation Safety Regulations 1998 provides that an AD is a disallowable instrument for the purposes of section 46A of the Acts Interpretation Act 1901. Therefore, in accordance with section 6 of the Legislative Instruments Act 2003, an AD is a legislative instrument.

Under Annex 8 to the Convention on International Civil Aviation, the State of Design has overall responsibility for continuing airworthiness of an aircraft type, and must provide any information necessary to ensure the continuing airworthiness of a type to appropriate States of Registry.  ADs (and their equivalents) are the most common form of continuing airworthiness information, and are issued by most ICAO Contracting States.

The State of Registry of an individual aircraft is responsible for its continuing airworthiness.  Under Annex 8, the State of Registry must develop or adopt requirements to ensure the continuing airworthiness of aircraft.  When a State of Design issues an AD against a type of aircraft on the Australian Register, CASA, as Australia’s national airworthiness authority, must assess that information and, if appropriate, issue an Australian AD to mandate the requirements of the State of Design.

CASA and its predecessors issued AD/PA-36/20 Amdt 1 specifying periodic inspection of the engine mount attachment brackets in Piper PA-36 aircraft. 
AD/PA-36/20 Amdt 1 is intended to match AD 79-12-09 issued for the Piper PA-36 in the USA, the State of Design of the Piper PA-36.  CASA has reviewed
AD/PA-36/20 Amdt 1 and has decided to amend it to more closely match AD
79-12-09.  The amendment, AD/PA-36/20 Amendment 2, will become effective on
12 March 2009.  This AD cancels and replaces the previous issue.

As this AD is issued because of Australia’s obligations under Convention on International Civil Aviation, and because it is issued in response to an AD raised by the relevant State of Design, no consultation of the Australian public has taken place on this AD.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

The AD has been made by the acting Manager, Airframes and Structures in the Airworthiness Engineering Group, on behalf of CASA, in accordance with subsection 84A (2) of the Act.

Overview

The Civil Aviation Act 1988 was enacted to establish a comprehensive legal framework for civil aviation in Australia, ensuring the safety, efficiency, and orderly development of civil aviation. The Act provides the authority for the creation of regulations aimed at enhancing the safety of air navigation. The Civil Aviation Safety Regulations 1998, under regulation 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives serve as legislative instruments, as outlined in the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003, and are crucial for maintaining the continuing airworthiness of aircraft. In line with international obligations under the Convention on International Civil Aviation, Australia’s national airworthiness authority, CASA, is responsible for assessing and issuing ADs that align with those from the aircraft's State of Design, ensuring compliance with global safety standards.

Scope and Application

The Civil Aviation Safety Regulations 1998, under section 39.001, empower the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products. These directives are legislative instruments subject to disallowance under section 46A of the Acts Interpretation Act 1901 and are regulated as per section 6 of the Legislative Instruments Act 2003. ADs are integral to maintaining the continuing airworthiness of aircraft types, aligning with Annex 8 of the Convention on International Civil Aviation, which mandates that the State of Design bear responsibility for such airworthiness and provide necessary information to the State of Registry. CASA, acting as Australia's national airworthiness authority, is required to assess ADs issued by the State of Design and may issue corresponding Australian ADs to enforce these requirements. For instance, CASA issued AD/PA-36/20 Amdt 1 for Piper PA-36 aircraft, and subsequently, AD/PA-36/20 Amendment 2, to align with the US Federal Aviation Administration's AD 79-12-09. Given that these ADs are issued due to international obligations and in response to directives from the State of Design, they do not necessitate public consultation or a Regulatory Impact Statement. This AD was promulgated by the acting Manager, Airframes and Structures in CASA's Airworthiness Engineering Group, in accordance with subsection 84A(2) of the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Act 1988, supplemented by the Civil Aviation Safety Regulations 1998, provides the framework for the issuance of airworthiness directives (ADs) in Australia. Section 98 of the Act allows the Governor-General to make regulations in the interests of air navigation safety, and regulation 39.001 specifically empowers the Civil Aviation Safety Authority (CASA) to issue ADs for certain types of aircraft or aeronautical products. This authority is exercised under the auspices of the International Civil Aviation Organization (ICAO) Convention on International Civil Aviation, which mandates that the State of Design must provide information to ensure the continuing airworthiness of aircraft types, a responsibility that CASA fulfills by issuing Australian ADs that align with those of the State of Design. This regulatory approach ensures that Australian aircraft maintain the required safety standards in line with international practices. The obligations imposed by the Civil Aviation Safety Regulations 1998 on CASA and other entities are significant. CASA must rigorously assess any ADs issued by the State of Design and determine whether they necessitate the issuance of corresponding Australian ADs. This involves ensuring that the safety directives issued by CASA are consistent with the international standards set by the ICAO. Additionally, under Annex 8 of the Convention on International Civil Aviation, the State of Registry of individual aircraft is tasked with ensuring the continuing airworthiness of those aircraft, which includes complying with relevant ADs. CASA, as the national airworthiness authority, must ensure that Australian ADs are implemented and followed by aircraft operators within its jurisdiction. Failure to comply with an AD can result in serious consequences. Under the Civil Aviation Act 1988, non-compliance with an AD can be considered a breach of the regulations, potentially leading to enforcement actions against the aircraft operator. The severity of the consequences may vary, but in extreme cases, CASA has the authority to ground non-compliant aircraft until the required actions are taken. The Civil Aviation Safety Regulations 1998 do not specify monetary penalties for breaches of ADs; however, the overarching Civil Aviation Act 1988 provides for various sanctions, including fines and imprisonment, depending on the nature and severity of the breach. These provisions underscore the importance of adhering to ADs to maintain the highest standards of aviation safety in Australia.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.