CASA EX27/06 - Exemption - time-in-service recording on maintenance release: Determination - non-application of part of Civil Aviation Order 100.5

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

Legislation au F2006L02368 Not in force Legislative Instrument

Legislation content

Explanatory Statement

Exemption — time-in-service recording on maintenance release

Determination — non-application of part of Civil Aviation Order 100.5

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

Legislation — CAR 1988

Under subregulation 43B (1) of the Civil Aviation Regulations 1988 (CAR 1988), it is an offence if, on completion of a day’s flying operations, the owner, operator or pilot in command of the aircraft fails to record on the maintenance release the total time-inservice of the aircraft on that day.

Under subregulation 308 (1) of CAR 1988, CASA may exempt aircraft, or persons in, on, or otherwise associated with the operation of, the aircraft, from compliance with specified provisions of CAR 1988.

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

Under subregulation 308 (3), CASA may make an exemption subject to any condition specified in the exemption as being necessary in the interests of safety.

Background

Regulation 43B was inserted in CAR 1988 in 1992. Before this, the larger airlines were exempt from the requirement for such time-in-service recording. The larger airlines have, in the main, highly complex computerised infrastructures to control and manage aircraft maintenance. Regulation 43B presented these airlines with considerable difficulty because their computer programs are not programmed for this particular information and would require substantial alteration to enable compliance with regulation 43B. The kind of information involved is provided in an alternative form through the aircraft’s approved system of maintenance.

In these circumstances, CASA considers that the requirement for daily recording of time-in-service for each Class A aircraft is neither necessary nor appropriate.

Instrument — exemption

The instrument, therefore, exempts the owner, operator and pilot in command of a Class A aircraft from the specific time-in-service recording requirements of regulation 43B of CAR 1988. Class A aircraft are Australian aircraft certificated in the transport category or used under an air operator’s certificate that authorises regular public transport operations.

Conditions

The exemption is subject to conditions. The operator of the aircraft must ensure that the aircraft’s approved system of maintenance includes an approved recording method for time-in-service which is sufficient to meet the continuing airworthiness requirements of the aircraft. The operator must also include details of the recording method in the operator’s maintenance control manual prepared for regulation 42ZY of CAR 1988.

Legislation — CAO 100.5

Under subregulation 43 (1) of CAR 1988, maintenance releases for Australian aircraft may only be issued in the manner and form that CASA directs or approves. Under subregulation 43 (2) of CAR 1988, CASA may give directions specifying the information to be entered on a maintenance release before it is issued. Under subregulation 5 (1) of CAR 1988, where CASA has power to issue directions it may do so in Civil Aviation Orders. Paragraph 6.5 of Civil Aviation Order 100.5 (CAO 100.5) contains directions specifying the information to be entered on a maintenance release.

Subparagraphs 6.5 (d), (e) and (f) of CAO 100.5 set out requirements to record timein-service and related information which, for the reasons mentioned above, are neither necessary nor appropriate for Class A aircraft.

Under paragraph 1.2 of CAO 100.5, CASA may issue a determination that a provision of CAO 100.5 does not apply to specified Australian aircraft. Under paragraph 1.3 of CAO 100.5, before making a determination CASA must take into account any relevant safety considerations. Using this power, CASA has determined in the instrument that subparagraphs 6.5 (d), (e) and (f) of CAO 100.5 do not apply to Class A aircraft. The information that would otherwise be required to be recorded under subparagraphs 6.5 (d), (e) and (f) of CAO 100.5 is adequately dealt with under the conditions for the exemption. Hence, the exemption and the determination are combined in the same instrument.

CASA does not consider that the exemption or the determination will have a detrimental effect on the safety of air navigation. The instrument replaces instrument CASA EX29/2004 which expires at the end of July 2006.

Legislative Instruments Act

Under subregulation 308 (4) of CAR 1988, an exemption is 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. Under subsection 5 (4) of the LIA, if some provisions of an instrument are of a legislative character (i.e. the exemption) and others are not (i.e. the determination), the whole instrument is taken to be a legislative instrument. The instrument is, therefore, a legislative instrument and is subject to tabling and disallowance in the Parliament under sections 38 and 42 of the LIA.

Consultation under section 17 of the LIA has not been undertaken in this case. The instrument replaces, with the same scope and effect, an earlier similar instrument which expires at the end of July 2006 and which was to facilitate the operation of Class A aircraft without prejudicing safety.

The instrument comes into effect on 1 August 2006, after it is registered. It stops having effect at the end of July 2008.

The exemption has been made by the Acting Director of Aviation Safety in accordance with subsection 84A (2) of the Act.

[Instrument number CASA EX27/06]

Overview

The Civil Aviation (Exemption—Time-In-Service Recording on Maintenance Release) Determination 2006, issued under the Civil Aviation Act 1988, aims to address the impracticality of mandating daily time-in-service recording for Class A aircraft, which include Australian aircraft certificated in the transport category or used under an air operator’s certificate for regular public transport operations. The determination was introduced to alleviate the burden on larger airlines with sophisticated computerised infrastructures, which are ill-suited for the specific information requirements outlined in the Civil Aviation Regulations 1988 (CAR 1988). By exempting these airlines from the need to record time-in-service daily on maintenance releases, the determination seeks to maintain safety standards without imposing undue operational challenges. The instrument, created by the Civil Aviation Safety Authority (CASA), ensures that the safety of air navigation is upheld by requiring that the aircraft’s approved system of maintenance includes a sufficient recording method for time-in-service, documented in the operator’s maintenance control manual.

Scope and Application

The Civil Aviation Regulations 1988 (CAR 1988) mandate that the owner, operator, or pilot in command of an aircraft must record the total time-in-service of the aircraft at the end of each day's flying operations on the maintenance release. This requirement, however, does not apply to Class A aircraft, which are Australian aircraft certificated in the transport category or used under an air operator’s certificate that authorises regular public transport operations. Instead, these aircraft are exempt from the daily recording requirement under subregulation 43B(1) of CAR 1988, provided certain conditions are met. These conditions include ensuring that the aircraft’s approved system of maintenance includes an approved recording method for time-in-service sufficient to meet the continuing airworthiness requirements of the aircraft, and detailing this method in the operator’s maintenance control manual. Additionally, the instrument determines that specific subparagraphs of Civil Aviation Order 100.5 do not apply to Class A aircraft, aligning with the exemption conditions to maintain safety standards without imposing unnecessary burdens on larger airlines. The exemption and determination are consolidated in the same instrument, which is subject to tabling and disallowance in Parliament under the Legislative Instruments Act 2003. This instrument comes into effect on 1 August 2006 and will expire at the end of July 2008, replacing an earlier instrument that facilitated the same exemptions.

Key Provisions

The key operative sections of the instrument concern the exemption of certain requirements under the Civil Aviation Regulations 1988 (CAR 1988) and the non-application of specific provisions in Civil Aviation Order 100.5 (CAO 100.5). This exemption applies to Class A aircraft, which are Australian aircraft certificated in the transport category or used under an air operator's certificate for regular public transport operations. Subregulation 43B(1) of CAR 1988 mandates the recording of the total time-in-service of an aircraft on a maintenance release, but this requirement is exempted for Class A aircraft under the instrument. Similarly, subparagraphs 6.5(d), (e) and (f) of CAO 100.5, which specify information to be recorded on a maintenance release, do not apply to Class A aircraft as determined by the instrument. The obligations imposed by this instrument on the parties it governs primarily involve the operators of Class A aircraft. These operators must ensure that their approved system of maintenance includes an approved method for recording time-in-service, sufficient to meet the continuing airworthiness requirements of the aircraft. This method must be detailed in the operator's maintenance control manual prepared in accordance with regulation 42ZY of CAR 1988. Such measures ensure that the safety standards for air navigation are maintained, even though the specific recording requirements are exempted. The instrument includes provisions for potential breaches and consequences. While the specific time-in-service recording requirement under regulation 43B(1) of CAR 1988 is exempted for Class A aircraft, failure to comply with the conditions outlined in the exemption could potentially lead to safety concerns. However, no specific civil or criminal penalties are mentioned in the text for non-compliance with the exemption conditions. The overarching aim is to maintain safety through alternative, equally effective means of recording time-in-service.

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Aviation Law
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Regulation
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Exemptions & Exclusions
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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.