AD/BEECH 55/19 - Engine Mount Bolt Nuts - CANCELLED

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Legislation au F2008L01577 Not in force Legislative Instrument

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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, 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 issued AD/BEECH 55/19, affecting Beech 55 model aircraft in 1970.  CASA has reviewed this AD and as a result has decided to cancel it.  The cancellation will become effective on 5 June 2008.  No replacement AD is required, as all affected aircraft would have been inspected, and, if necessary, modified long ago.

No consultation with the Australian public has taken place on this AD cancellation, because the cancellation results in a reduction of the regulatory burden.  The Office of Best Practice Regulation has determined that ADs do not require a Regulatory Impact Statement.

 

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

 

Overview

The Civil Aviation Act 1988, enacted by the Australian Parliament, aims to regulate civil aviation safety and efficiency. This Act, along with the Civil Aviation Safety Regulations 1998, provides the framework for the issuance of airworthiness directives (ADs), which are regulations made to ensure the safety of air navigation. Specifically, section 98 of the Civil Aviation Act 1988 empowers the Governor-General to make regulations in the interest of air navigation safety, while regulation 39.001 of the Civil Aviation Safety Regulations 1998 allows the Civil Aviation Safety Authority (CASA) to issue ADs for specific types of aircraft or aeronautical products. The policy objective behind these provisions is to maintain and enhance the safety standards of aircraft operating within Australia by ensuring they comply with necessary regulatory requirements. As part of its regulatory functions, CASA has the responsibility to assess information from the State of Design and, when appropriate, issue an Australian AD to enforce the requirements set forth by the State of Design. Recently, CASA reviewed and decided to cancel AD/BEECH 55/19, which affected Beech 55 model aircraft from 1970. This cancellation, effective from 5 June 2008, is based on the determination that no further action is needed as all affected aircraft would have already been inspected and, if necessary, modified. The cancellation reduces regulatory burden, and no public consultation was deemed necessary. The AD was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, in accordance with the provisions of the Act.

Scope and Application

The Civil Aviation Act 1988, as amended by the Civil Aviation Safety Regulations 1998, applies to all entities and individuals involved in the civil aviation sector in Australia, including aircraft manufacturers, operators, and maintenance providers. The Act authorises the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for specific types of aircraft or aeronautical products to ensure the safety of air navigation. These directives are legislative instruments and are subject to disallowance as per the Acts Interpretation Act 1901 and the Legislative Instruments Act 2003. The ADs are consistent with Annex 8 to the Convention on International Civil Aviation, which mandates the State of Design to ensure the continuing airworthiness of aircraft types, while the State of Registry is responsible for the individual aircraft's airworthiness. CASA's role includes assessing ADs issued by the State of Design and issuing Australian ADs if necessary. The cancellation of AD/BEECH 55/19, which was issued in 1970 for Beech 55 model aircraft, was made by the Manager, Airframes in the Airworthiness Engineering Branch, on behalf of CASA, following a review and determination that no further action is required as all affected aircraft would have already been inspected and modified if necessary. No public consultation or Regulatory Impact Statement was required for this cancellation as it reduces the regulatory burden.

Key Provisions

The key sections of the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 allow the Governor-General to make regulations for the safety of air navigation (section 98), and for the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for aircraft types (regulation 39.001). These ADs are legislative instruments, as they are disallowable under section 46A of the Acts Interpretation Act 1901 and are regulated by the Legislative Instruments Act 2003 (subregulation 39.001(5)). The State of Design has a primary responsibility for the continuing airworthiness of aircraft types, and must provide necessary information to States of Registry (Annex 8, Convention on International Civil Aviation). The State of Registry, such as CASA in Australia, must ensure the continuing airworthiness of individual aircraft by developing or adopting requirements as needed. The obligations imposed by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998 on CASA include the assessment of airworthiness information from the State of Design and the issuance of Australian ADs when necessary. CASA must ensure that any AD issued is compliant with the safety standards set out in international agreements, such as Annex 8 to the Convention on International Civil Aviation. The ADs must be reviewed periodically, and when deemed necessary, cancelled if they are no longer required. CASA must also ensure that the cancellation of an AD does not result in any safety risks and must communicate any necessary actions to the relevant stakeholders. There are no explicit offences or penalties outlined for the breach of ADs in the provided text. However, failure to comply with ADs could result in severe consequences, including potential legal action for non-compliance with aviation safety regulations. The safety of air navigation is paramount, and any breach of ADs could lead to serious safety incidents. CASA’s role in monitoring and enforcing compliance with ADs is critical in maintaining the high safety standards required by the Civil Aviation Act 1988 and the Civil Aviation Safety Regulations 1998. The cancellation of ADs, such as AD/BEECH 55/19, is subject to rigorous review to ensure that it does not compromise the safety of aircraft in operation.

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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.