CASA EX06/06 - Exemption – maintenance on limited category and experimental aircraft

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006L00636 Not in force Legislative Instrument

Legislation content

Explanatory Statement

Civil Aviation Regulations 1988 regulation 308

Exemption – maintenance on limited category and experimental aircraft

 

Section 98 of the Civil Aviation Act 1988 (the Act) empowers the Governor-General to make regulations for the purposes of the Act and in the interests of the safety of air navigation.

 

Subregulation 308 (1) of the Civil Aviation Regulations 1988 (CAR 1988) provides that CASA may exempt aircraft, or persons in, on, or otherwise associated with the operation of aircraft, from compliance with specified provisions of CAR 1988.

 

Subregulation 308 (2) provides that before making an exemption, CASA must take into account any relevant considerations relating to the interests of safety.

 

Subregulation 308 (3) of CAR 1988 provides that CASA may make an exemption subject to conditions specified in the exemption as being necessary in the interests of safety.

 

Under regulations 21.189 and 21.195A of the Civil Aviation Safety Regulations 1998 (CASR 1998), aircraft are not required to meet design standards in order to qualify for the issue of special certificates of airworthiness in the limited category or experimental certificates.

 

Regulation 35 of CAR 1988 requires that, unless the design of the modification or repair is specified by CASA in an Airworthiness Directive, or direction, or is specified in the aircraft’s approved maintenance data, the design of the modification or repair must be approved under that regulation.

 

Paragraph 35 (2) (b) of CAR 1988 provides that approval under regulation 35 is only possible when the design conforms with the design standard for the aircraft.

 

Subregulation 21 (2) of CAR 1988 provides that, when no design standard is in force for an aircraft for which an application is made under regulation 35, CASA must issue a design standard.

 

Paragraphs 42W (2) (b) and 42W (4) (a) and (c) of CAR 1988 require a replacement component to be designed, manufactured and modified or repaired in compliance with a design standard. These provisions have created problems for limited category and experimental aircraft.

 

This sequence of requirements imposes an undue burden on:

  • CASA or any authorised person asked to approve the design of a modification or repair to 1 of these aircraft for which no design standard applies; and
  • CASA because of the obligation under subregulation 21 (2) to issue a design standard for 1 of these aircraft, even though no design standard is intended to apply; and
  • persons who carry out maintenance on these aircraft because, unless the design of the modification or repair is specified by CASA in an Airworthiness Directive or direction, or is specified in the aircraft’s approved maintenance data, these persons are not permitted to modify or repair the aircraft until the design is approved under regulation 35; and
  • registered operators because they must obtain approvals under regulation 35 before having their aircraft modified or repaired.

 

The instrument exempts persons carrying out maintenance on limited category or experimental aircraft from compliance with the requirements of regulation 42U and paragraphs 42W (2) (b), (4) (a) and (4) (c) of CAR 1988. In the interest of safety, the exemption is subject to conditions and limitations.

 

The exemption does not apply to:

(a) the maintenance of aircraft instruments and equipment specifically required by CAR 1988 or the Civil Aviation Orders; or

(b) maintenance related to a condition of the special certificate of airworthiness or experimental certificate for the aircraft; or

(c) maintenance specified in an Airworthiness Directive or a direction issued by CASA applicable to the aircraft; or

(d) maintenance related to an instruction specified in the aircraft’s approved maintenance data.

 

The exemption is subject to the condition that if a modification or repair of an aircraft, or replacement of an aircraft component, is a major design change to the aircraft, the aircraft registered operator must as soon as possible tell CASA or an authorised person of the design change.

 

A further condition imposed is that if the maintenance is a modification or repair that invalidates the certificate of airworthiness or the experimental certificate of the aircraft, the registered operator for the aircraft may operate the aircraft only if he or she has obtained a new certificate of airworthiness or experimental certificate for the aircraft.

 

Legislative Instruments Act

Subregulation 308 (4) of CAR 1988 declares an exemption to be a disallowable instrument. Under subparagraph 6 (d) (i) of the Legislative Instruments Act 2003 (the LIA), an instrument is a legislative instrument for section 5 of the LIA if it is declared to be a disallowable instrument under legislation in force before the commencement of the LIA. The exemption is, therefore, a legislative instrument and it is subject to tabling and disallowance in the Parliament under sections 38 and 42 of the LIA.

 

Consultation

Consultation under section 17 of the LIA has not been undertaken in this case because the exemption is minor and machinery in nature.

 

The instrument commences a day after it is registered. It stops having effect at the end of 28 February 2008.

 

The exemption has been made by the Deputy Chief Executive and Chief Operating Officer, a delegate of CASA, in accordance with subregulation 7 (1) of CAR 1988.

 

[Instrument number CASA EX06/06]

Overview

The Civil Aviation Regulations 1988, enacted by the Australian Government, were introduced to regulate the safety and efficiency of civil aviation within Australia. This legislative framework was designed to ensure that all aspects of civil aviation operations, including maintenance, are conducted with a paramount focus on safety. Subregulation 308(1) of these regulations allows the Civil Aviation Safety Authority (CASA) to exempt certain aircraft or persons from specified regulatory provisions, provided that safety considerations are carefully weighed. This regulatory flexibility aims to address the specific challenges faced by limited category and experimental aircraft, which often do not meet existing design standards but are still required for certain operations. The exemption under discussion, issued by CASA, alleviates some of the regulatory burdens on those maintaining these aircraft, while still ensuring that safety standards are upheld through conditions and limitations on the exemption. The exemption, declared a disallowable instrument under the Legislative Instruments Act 2003, is subject to parliamentary oversight to maintain checks on its application and impact.

Scope and Application

The Civil Aviation Regulations 1988, as amended by the instrument F2006L00636, provide an exemption for certain maintenance activities related to limited category and experimental aircraft, aiming to alleviate undue burdens while maintaining safety standards. Specifically, the exemption applies to persons carrying out maintenance on these types of aircraft, sparing them from complying with certain provisions of the Civil Aviation Regulations 1988. However, it is imperative to note that this exemption does not extend to the maintenance of aircraft instruments and equipment mandated by the Civil Aviation Regulations 1988 or the Civil Aviation Orders, nor does it apply to maintenance that relates to conditions of the special certificate of airworthiness or experimental certificate, or maintenance specified in Airworthiness Directives or directions issued by the Civil Aviation Safety Authority (CASA). Additionally, maintenance that is detailed in the aircraft’s approved maintenance data is also excluded from this exemption. The exemption is subject to specific conditions and limitations to ensure that safety remains a paramount concern. For instance, if a modification or repair constitutes a major design change, the registered operator must promptly inform CASA or an authorised person. Furthermore, if the maintenance results in the invalidation of the certificate of airworthiness or experimental certificate, the operator can only continue to operate the aircraft if a new certificate has been obtained. This exemption, declared under subregulation 308(4) of the Civil Aviation Regulations 1988, is a disallowable instrument and thus subject to parliamentary scrutiny under the Legislative Instruments Act 2003. The instrument was issued by a delegate of CASA and commenced a day after its registration, remaining in effect until the end of February 2008.

Key Provisions

Regulation 308 of the Civil Aviation Regulations 1988 (CAR 1988) allows for exemptions from specific regulatory requirements for maintenance on limited category and experimental aircraft, as stipulated in subregulation 308(1). The regulation recognises that strict compliance with certain design standards can be a burden for these types of aircraft. This exemption is granted by the Civil Aviation Safety Authority (CASA) and is contingent upon ensuring that safety is not compromised. The exemption is subject to conditions specified by CASA, as outlined in subregulation 308(3). These conditions are aimed at maintaining safety while providing some flexibility in regulatory compliance for limited category and experimental aircraft. The obligations imposed by the Act on the parties it governs include ensuring that any maintenance performed on limited category or experimental aircraft adheres to the exemption conditions set forth in the regulation. Specifically, CASA or any authorised person must be notified immediately if a modification or repair constitutes a major design change. Furthermore, if a modification or repair invalidates the certificate of airworthiness or the experimental certificate of the aircraft, the registered operator must obtain a new certificate before operating the aircraft. Additionally, the exemption does not apply to the maintenance of aircraft instruments and equipment required by CAR 1988 or the Civil Aviation Orders, maintenance related to conditions of the special certificate of airworthiness or experimental certificate, maintenance specified in an Airworthiness Directive or direction, or maintenance related to instructions in the aircraft’s approved maintenance data. Breaches of the conditions outlined in the exemption regulation may result in civil or criminal consequences. The severity of the penalties would depend on the nature and extent of the breach. For example, operating an aircraft without the necessary airworthiness or experimental certificate could result in fines and potential imprisonment. The exact penalties are not specified in the provided text, but they would be determined in accordance with the Civil Aviation Act 1988 and other relevant legislation. The exemption itself is a legislative instrument and is subject to disallowance in Parliament under sections 38 and 42 of the Legislative Instruments Act 2003 (LIA). The regulation commences a day after it is registered and ceases to have effect at the end of 28 February 2008.

Legal classification tags

Area of Law
Administrative Law
Civil Aviation Law
Instrument
Regulation
Concepts
Definitions & Interpretation
Licensing & Registration
Compliance Obligations
Exemptions & Exclusions
Enforcement Powers

Interactions

Authorises

All Versions

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.