CASA EX42/24 — Maintenance Control (Certain Class A Aircraft Only Engaged in Private Operations) Exemption 2024

The instrument rests on a small set of legal and operational concepts. First, the legal mechanism is an exemption made under regulatory powers. The instrument states it is "made under regulations 11.160 and 11.205 of the Civil Aviation Safety Regulations 1998." That identifies the enabling authority, though the instrument itself does not reproduce the enabling regulations. The effect is an administrative relaxation of specific regulatory duties in the Civil Aviation Regulations, implemented by a CASA delegate.

Second, the instrument relies on several defined terms and external provisions in the CAR. It references the definition of "class A aircraft" in subregulation 2(1) of CAR and the meaning of "private operations" as used in CAR. Those cross-references mean the exemption’s eligibility is determined by the CAR definitions, which are not reproduced in the instrument. The instrument therefore operates by selective waiver: it exempts certain operators from two specific subregulations, but only if the operator and aircraft meet the externally defined thresholds in CAR.

Third, the structure of the exemption is conditional. The exemption is not unconditional or blanket; section 4(2) states that "The exemptions are subject to the condition stated in section 5." Section 5 does not merely require a named accountable person for a single function; it requires that the aircraft’s approved system of maintenance "states the name of the person who is responsible" for six discrete functions: (a) arrangements for control of maintenance; (b) arrangements under which the approved maintenance program is to be met; (c) arrangements to ensure compliance with weight and balance requirements; (d) determining the period for which a maintenance release is to remain in force; (e) control of all maintenance, scheduled or unscheduled; (f) the investigation of a defect conducted for purposes of subregulation 51(4) of CAR. The instrument therefore transfers some regulatory focus from compliance with the text of subregs 42ZV(1) and 42ZY(1) to a named-responsibility model embedded in an approved system of maintenance.

Fourth, the time-limited nature of the instrument is a central concept. The instrument explicitly sets its commencement and repeal triggers. It "commences on 1 August 2024" and ceases at the earlier of either the commencement of Parts 1 and 2 of Schedule 1 to the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024, or 31 July 2027. That structure makes the exemption transitional, designed to apply until specified amendment regulations take effect or until a fixed date.

Fifth, the instrument uses the legal category "operator of an Australian aircraft" and ties obligations to the operator. Section 3 begins "This instrument applies to the operator of an Australian aircraft that..." and section 5's obligation is phrased "The operator must ensure that the aircraft’s approved system of maintenance states the name of the person who is responsible for..." The text therefore places the duty to implement and maintain the stated-names condition on the operator, rather than on, for example, the maintenance organisation or the individual maintenance personnel. That allocation of duty is material for compliance planning.

Lastly, the instrument substitutes a naming requirement for compliance with two named subregulations. Without reproducing the content of 42ZV(1) and 42ZY(1), the instrument is titled "Maintenance Control", and the condition focuses on the control of maintenance, approved maintenance programs, weight and balance, maintenance release duration, control over maintenance events, and investigations of defects. The naming requirement is a mechanism to retain accountability and traceability where the underlying regulatory rules are otherwise waived, at least for the class of operators and period specified.

The instrument defines its target group narrowly. Section 3 states it "applies to the operator of an Australian aircraft that: (a) is a class A aircraft because it satisfies paragraph (a) of the definition of class A aircraft in subregulation 2(1) of CAR; and (b) does not satisfy paragraph (b) of the definition mentioned in paragraph (a); and (c) is only engaged in private operations within the meaning of CAR." The immediate subjects are therefore operators of Australian-registered aircraft that meet those cumulative criteria.

Because the instrument cross-references the CAR definitions, the practical scope depends on the content of subregulation 2(1)'s definition of class A aircraft and the CAR definition of "private operations." The instrument itself does not include those definitions, so readers must consult CAR to determine the exact set of aircraft and operations captured. The operative point is that the relief is not available to aircraft that meet paragraph (b) of the class A definition, nor to aircraft engaged in commercial operations, nor to non-Australian registered aircraft.

The obligation in section 5 is owed by "the operator". In many regulatory settings that term denotes the entity responsible for the operation of the aircraft, which may be the owner, lessee, or a designated operator under CAR. The instrument therefore affects whoever is the operator under CAR for those aircraft. The named-responsibility condition requires the operator to ensure that the aircraft’s approved system of maintenance "states the name of the person who is responsible" for listed functions. That will have operational effects on how operators structure their maintenance systems, contracts with maintenance providers, and internal allocation of duties.

Secondary stakeholders will also be affected. Maintenance organisations and certifying staff will face a different compliance environment for affected aircraft because the operator is exempted from subregs 42ZV(1) and 42ZY(1). Even where those subregulations previously placed obligations on operators to maintain certain controls, the exemption shifts the regulatory focus to the approved system of maintenance and the named-responsibility requirements. Maintenance providers may therefore need to coordinate with operators to ensure the approved system of maintenance accurately records who is responsible for each element listed in section 5.

Other affected parties include insurers, registrars, and auditors. The naming requirement will create documentable lines of accountability that insurers and auditors may require to assess risk. The requirement to name the person responsible for determining "the period, or period of time-in-service, for which a maintenance release for the aircraft is to remain in force" (section 5(d)) may directly affect the issuance and validity of maintenance releases, with downstream effects for airworthiness declarations and insurance coverage.

Finally, the instrument is time-limited, so the affected class may change or disappear when the triggering Parts of the amendment regulations commence, or on 31 July 2027. Operators who rely on the exemption must therefore monitor regulatory developments to know when they will revert to the original regulatory regime or move under the new amending regulations.

The instrument creates two negative and positive legal effects: it grants exemptions from specified CAR subregulations and it imposes a specific, named-responsibility condition that the operator must meet in return.

Exemptions granted. Section 4(1) states, plainly, "The operator is exempt from complying with subregulations 42ZV(1) and 42ZY(1) of CAR." Those are the substantive waivers. The instrument does not reproduce the text of those subregulations, so this instrument's effect must be read alongside CAR to see precisely which duties are removed. The exemption applies only to operators of aircraft that satisfy the eligibility criteria in section 3.

Conditional duty. Section 5 sets the singular condition on those exemptions: "The operator must ensure that the aircraft’s approved system of maintenance states the name of the person who is responsible for each of the following:" followed by a six-part list. The list items are expressed as responsibilities the named person must be recorded for. The six items (a)-(f) in section 5 are specific and operational. They are:

• (a) "the arrangements for the control of maintenance of the aircraft";
• (b) "the arrangements under which the aircraft’s approved maintenance program is to be met";
• (c) "the arrangements to ensure compliance with the weight and balance requirements for the aircraft";
• (d) "determining the period, or period of time-in-service, for which a maintenance release for the aircraft is to remain in force";
• (e) "the control of all maintenance carried out on the aircraft, either scheduled or unscheduled";
• (f) "the investigation of a defect in the aircraft that is conducted for the purposes of subregulation 51(4) of CAR."

Operators therefore have a positive duty to ensure that the approved system of maintenance names the person responsible for each of these functions. The duty is phrased as an obligation to "ensure" the approved system states the name, which imports an ongoing compliance and oversight element: the operator must not only initially record those names but must ensure the approved system remains accurate and up to date.

Rights and limits. The instrument does not create new rights in the sense of entitlements to conduct particular maintenance practices; rather it creates an entitlement to relief from the two named CAR subregulations, subject to meeting the naming condition. The instrument also limits the temporal reach of the entitlement: it is time-limited and conditional. The operator's entitlement to be exempt ceases at the instrument's repeal triggers.

Allocation of accountability. By requiring that the aircraft’s approved system of maintenance "states the name of the person who is responsible" for discrete maintenance-control functions, the instrument concretely allocates accountability to named individuals (or possibly named roles, depending on how "name of the person" is interpreted by CASA or in practice). That creates a documentary trail of who is responsible for the listed functions, which may then be used by regulators, auditors, or other parties to assess compliance.

Interaction with other CAR duties. The instrument exempts only from two enumerated subregulations. It does not purport to exempt operators from other CAR obligations, including but not limited to obligations under subregulation 51(4) (which is itself referenced when identifying the need to name the person responsible for defect investigations) or any safety duties outside those two subregulations. The operator's duties therefore become a mixture: relief from specific provisions, coupled with the new naming requirement and all other existing CAR obligations.

Documentation obligation. The instrument effectively elevates the approved system of maintenance as the place where named responsibility must be recorded. That requires operators to ensure the approved system of maintenance is both approved and amended (if necessary) to include the names required by section 5. The language is precise: the system must "state the name of the person who is responsible for" each function; the instrument does not permit omission of that information if the operator is to rely on the exemptions.

The instrument does not itself specify penalties or enforcement remedies. It is an exemption instrument that modifies regulatory obligations, but it does not include express penalty clauses or enforcement provisions within its text. Section 4 says only that "The operator is exempt from complying with subregulations 42ZV(1) and 42ZY(1) of CAR," and section 5 imposes a condition in mandatory language, "The operator must ensure..." There is no separate penalty schedule or explicit enforcement mechanism spelled out in the instrument itself.

Because the instrument is made under regulatory powers, enforcement and penalties for non-compliance will be a matter of the broader Civil Aviation Regulations and the Civil Aviation Safety Regulations, which are the legal framework under which the instrument operates. The instrument refers to those instruments: it is "made under regulations 11.160 and 11.205 of the Civil Aviation Safety Regulations 1998" and it grants exemptions from subregulations in CAR. Enforcement of a failure to meet the section 5 condition would therefore, in practice, likely fall to CASA under its compliance and enforcement powers within the aviation regulatory framework. That would typically include administrative actions such as notices, directions, suspension or cancellation of approvals, and potential civil penalties where the CAR or CASR provide for them, but this instrument does not state which measures CASA might take in any given circumstance.

The instrument’s framing , exempting from specific subregulations while imposing a mandatory condition , means a failure to keep the approved system of maintenance stating the named persons could be viewed by CASA as a failure to meet the condition of the exemption. That could result in the exemption no longer applying to the operator, and the operator reverting to compliance obligations under the original subregulations 42ZV(1) and 42ZY(1) of CAR, together with any enforcement responses available to CASA under CAR and CASR. The instrument does not indicate whether failure to comply with section 5 would itself constitute an offence, or attract an express civil penalty, and it does not set out an administrative process for revocation of the exemption other than the temporal repeal triggers in section 2.

Because enforcement mechanics are not included in the instrument, operators must read this instrument alongside the broader CAR and CASR to identify the exact enforcement powers, sanctions, and processes that could be triggered. This is a gap in the instrument’s text: it changes compliance obligations but does not describe the enforcement consequences of breaching the new condition, leaving that to the underlying regulatory framework.

This instrument is explicitly cross-linked to multiple parts of the aviation regulatory framework, and it sets transitional relations with an amending instrument. The instrument is made under regulations 11.160 and 11.205 of the Civil Aviation Safety Regulations 1998. It grants exemption from "subregulations 42ZV(1) and 42ZY(1) of CAR", and it references "the definition of class A aircraft in subregulation 2(1) of CAR" and "subregulation 51(4) of CAR". It also includes a repeal trigger tied to "the commencement of Parts 1 and 2 of Schedule 1 to the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024."

Practical interaction points are these. First, eligibility depends on definitions and thresholds in CAR. The instrument’s scope binds to the meaning of "class A aircraft" and "private operations" as defined in CAR. Those external definitions will determine whether a particular aircraft and operator fall within the exemption. Operators must consult CAR to confirm that classification before they rely on the exemptions.

Second, the instrument grants exemptions from particular CAR subregulations. To understand the practical change, operators must read the instrument and those subregulations together. The instrument does not attempt to reproduce, replace, or redefine the content of the exempted subregs, beyond imposing the naming condition in section 5. Therefore, the net regulatory obligation is the residual set of CAR obligations not expressly exempted, plus the section 5 condition.

Third, the instrument references subregulation 51(4) of CAR in section 5(f). This creates a direct connection between the operator’s obligation to name the person responsible for investigating defects and the content or purpose of subregulation 51(4). The instrument therefore does not alter the requirement to investigate defects under subregulation 51(4); instead it requires the approved system to state who will carry out investigations conducted "for the purposes of subregulation 51(4) of CAR."

Fourth, the instrument’s repeal mechanism creates a transitional interaction with the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024. The instrument will be repealed on the earlier of either commencement of Parts 1 and 2 of Schedule 1 to that amending instrument, or 31 July 2027. This means the exemption is transitional and contingent on the timing of the amending regulations. When those Parts commence, operators may be required to comply with the new Part 43 maintenance regime, potentially without the exemption. The instrument therefore functions as an interim adjustment pending implementation of a broader legislative or regulatory reform.

Fifth, because the instrument does not specify enforcement mechanisms, enforcement will be governed by the general enforcement powers and penalty provisions contained in CAR and CASR. The instrument is therefore not freestanding; compliance and enforcement consequences should be determined by reference to the wider statutory and regulatory environment.

Finally, other laws and obligations outside aviation may interact indirectly. For example, corporate duties, occupational health and safety obligations, insurance contracts, and contractual arrangements with maintenance providers could be affected by the change in regulatory responsibilities. The required naming of persons responsible for specific maintenance-control functions will have evidentiary and contractual implications, as contractual parties may need to coordinate responsibilities to match the approved system of maintenance. Those interactions are not spelled out in the instrument, but they follow mechanically from the cross-linking between the operator’s duty under section 5 and the broader legal and commercial environment in which operators, maintenance organisations, insurers, and regulators operate.

The instrument itself is a single, self-contained instrument with a clearly stated effective date and repeal triggers. It is dated and signed by the delegate, "Steven Campbell, Executive Manager, National Operations & Standards", with the signature block dated "29 July 2024". Section 2 specifies commencement and repeal: it "commences on 1 August 2024" and "is repealed at the earlier of" the commencement of specified Parts of an amending instrument or 31 July 2027.

There are no textual amendments within this instrument; it is drafted as a one-off exemption with an inbuilt sunset mechanism. The instrument therefore has a simple amendment history: creation on 29 July 2024, commencement on 1 August 2024, and automatic repeal on the specified triggers. There are no subsequent changes recorded in the provided text. The instrument does make explicit reference to another legislative instrument , the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024 , and ties its repeal to the commencement of Parts 1 and 2 of Schedule 1 to that instrument. That reference indicates that the exemption is intended as a transitional measure pending the commencement of a broader regulatory reform, but the instrument itself does not record any amendments to its own text beyond the initial making.

Because the instrument is an exemption made under CASR regulatory powers, it sits alongside the main body of CAR and CASR instruments which are subject to periodic amendment. The instrument’s sunset provision means that when the specified Parts of the amending regulations commence, this instrument will be repealed automatically. If the amending regulations are delayed or do not commence, the instrument will remain in force only until 31 July 2027, when it will be automatically repealed.

There is no recorded history within the instrument of prior versions, earlier exemptions, or amendments to the same exemption number. It is numbered "CASA EX42/24", which suggests an indexing convention but does not, in the instrument itself, record predecessor instruments or successive amendments. Any amendment history prior to or after the date of this instrument would need to be checked against the official register of legislative instruments kept by CASA or the Federal Register of Legislation.

The instrument includes no litigation history in its text. It is an administrative exemption instrument and, based on the document provided, there are no cases, rulings, or judicial considerations recorded or referenced. The text does not mention judicial review, previous determinations, or litigation outcomes that informed its drafting.

Because the instrument is newly made and commences on 1 August 2024, and because the text includes a repeal trigger tied to future amending regulations or a 2027 sunset, it is reasonable to observe that the instrument is likely too recent to have generated substantive case law as of its date. Any legal challenges, litigation, or judicial interpretation arising from enforcement actions, disputes about the scope of the exemption, or the meaning of the naming requirement in section 5 would be matters for later proceedings and are not reflected in the instrument.

For practitioners or researchers seeking litigation history, the logical next steps would be to search the Federal Court, Federal Circuit, or relevant administrative tribunals and to monitor CASA enforcement actions after 1 August 2024. The instrument itself does not provide any guidance on how CASA will apply the exemption in contested cases, or on the evidentiary standards it will apply when determining whether an operator has "ensured" that the approved system of maintenance states the required names. Those issues could form the basis of future litigation, but no such matters are recorded in the instrument text.

This instrument carries a number of practical pitfalls and points of friction that operators and advisors should note. These are grounded in the instrument’s text, its cross-references, and its structural design.

1. Narrow eligibility criteria. The instrument applies only to aircraft that are "a class A aircraft because it satisfies paragraph (a) of the definition of class A aircraft in subregulation 2(1) of CAR; and does not satisfy paragraph (b) of the definition" and are "only engaged in private operations" (section 3). If an operator misreads the CAR definitions, they may mistakenly believe they qualify when they do not. The instrument’s relief is not available to aircraft that meet paragraph (b) of the class A definition or that engage in commercial operations.

2. Exemptions are limited to two subregulations. The instrument exempts the operator from subregulations 42ZV(1) and 42ZY(1) of CAR (section 4(1)). It does not exempt from other CAR obligations. Operators who assume a broader relaxation of maintenance-control responsibilities risk non-compliance with other provisions. The instrument’s title "Maintenance Control" might suggest broader relief, but legally the exemptions are as enumerated.

3. Condition wording requires precision. Section 5 requires that "the aircraft’s approved system of maintenance states the name of the person who is responsible for each of the following" responsibilities (a)-(f). There is potential ambiguity about whether the instrument requires an individual's legal name, a named corporate officer, a role title, or a position holder. CASA’s interpretation in practice will matter. Operators should not assume that naming a position or an entity satisfies "the name of the person", unless such an interpretation is confirmed.

4. Up-to-date approved system required. The requirement is that the operator "must ensure" the approved system states the names. That implies ongoing duty to maintain accuracy. When responsibilities change, the approved system must be amended. Failing to update the approved system could be construed as a failure to meet the condition, and therefore a breach of the exemption.

5. Interaction with maintenance releases. Section 5(d) requires naming the person responsible for "determining the period, or period of time-in-service, for which a maintenance release for the aircraft is to remain in force." This responsibility has operational consequences: if the named person lacks appropriate authority, competence, or information, maintenance releases could be issued or validated incorrectly, with implications for airworthiness and insurer expectations.

6. Defect investigation linkage. Section 5(f) ties responsibility for investigating defects to subregulation 51(4) of CAR. Operators must ensure the named person understands the scope and requirements of that subregulation. The instrument does not alter subregulation 51(4); it only requires naming who will investigate for its purposes. Misalignment between naming and practical investigative capability could be problematic in post-incident compliance reviews.

7. Time-limited relief and regulatory change risk. The exemption ceases at the earlier of commencement of specified amending regulation Parts or 31 July 2027 (section 2). Operators must track when the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024 take effect, because the instrument will be repealed automatically at that moment. Failing to plan for reversion to the full regulatory regime or transition to new Part 43 obligations could leave operators non-compliant.

8. No express enforcement language in the instrument. The absence of penalty clauses within the instrument itself means operators must infer enforcement risk by reference to CAR and CASR. That can make risk assessment harder and requires careful review of the underlying statutory framework to understand sanctions for breaches of the naming condition.

9. Potential misalignment between contractual arrangements and named responsibilities. Operators frequently outsource maintenance to third-party maintenance organisations. The instrument requires naming persons responsible for several functions. If contractual roles and named responsibilities do not align, there may be ambiguity as to who is accountable in practice, which could create compliance and liability issues.

10. Documentation and audit trail expectations. Because the instrument focuses on naming responsible persons within the approved system of maintenance, regulators and auditors are likely to expect a clear audit trail showing how responsibilities were assigned, how they were updated, and how the named persons exercised their duties. Operators that treat the naming requirement as a formality rather than a governance control may face scrutiny.

These "gotchas" arise directly from the instrument’s text and its cross-references. They point to practical compliance and governance risks, and to areas where further clarification from CASA or legal advice may be required.

The instrument places a clear, documentable duty on operators to ensure certain names appear in the aircraft’s approved system of maintenance. Compliance therefore requires administrative, governance, and operational steps. Below is a practical, sourced checklist grounded in the instrument’s text and structure.

1. Confirm eligibility before relying on exemption. Section 3 conditions application on the aircraft being "a class A aircraft because it satisfies paragraph (a) of the definition of class A aircraft in subregulation 2(1) of CAR; and does not satisfy paragraph (b) ...; and is only engaged in private operations within the meaning of CAR." Operators must consult the CAR definitions to confirm the aircraft and operations match these conditions. Do not assume automatic applicability.

2. Review the approved system of maintenance. Section 5 requires that "the aircraft’s approved system of maintenance states the name of the person who is responsible for each of the following..." Operators should obtain a copy of the current approved system of maintenance and identify whether it already records the names required under items (a)-(f).

3. Update the approved system of maintenance where necessary. If any of the required names are absent or unclear, the operator must ensure the system is amended so it "states the name of the person who is responsible" for each function listed in section 5(a)-(f). The update process should follow whatever approval steps are necessary under CAR for changes to an approved system of maintenance.

4. Be precise about naming. The instrument uses the phrase "states the name of the person who is responsible". Operators should ensure clarity about whether they record individual names, position titles, or both. Because the instrument uses the phrase "person", recording the legal name of the individual incumbent in the role is likely to be the safest approach, subject to CASA guidance or legal advice.

5. Map responsibilities to capability. For each named responsibility, ensure the named person has the authority, competence, and access to information required to fulfil the obligation in practice. Section 5 covers substantive functions such as "arrangements for the control of maintenance" and "the investigation of a defect ... for the purposes of subregulation 51(4) of CAR", which may require technical skills, delegated authority, and documented procedures.

6. Put change-control procedures in place. Because the requirement is framed as an ongoing duty to "ensure" the approved system states the required names, operators should implement change-control processes to update the approved system promptly when personnel changes occur. This includes documenting dates of changes, the position or individual replacing the previous incumbent, and ensuring the change is approved where required.

7. Coordinate with maintenance providers. Where maintenance functions are outsourced, ensure contractual arrangements reflect who will be the named person in the approved system of maintenance. Avoid gaps between contractual duties and named responsibility. If a maintenance organisation performs work but the operator remains the named responsible person, ensure that delegation and oversight arrangements are documented.

8. Record decisions about maintenance release periods. Section 5(d) requires naming the person who determines the maintenance release duration. Ensure the named person documents the rationale for chosen periods, technical bases, references to manufacturer guidance, and how the decision complies with airworthiness standards, so as to have a clear audit trail.

9. Document defect-investigation arrangements. For section 5(f), ensure the named investigator has written procedures for investigating defects in line with subregulation 51(4) of CAR, including reporting lines, recordkeeping, and corrective action processes. The approved system should reference or incorporate these procedures.

10. Monitor the repeals and amending regulations. Section 2 sets two repeal triggers. Operators should monitor the commencement of Parts 1 and 2 of Schedule 1 to the Civil Aviation Legislation Amendment (Part 43,Maintenance of Aircraft) Regulations 2024, and must be ready to transition to the new regulatory regime or re-adopt the pre-exemption requirements when the exemption is repealed at the earlier of those events or 31 July 2027.

11. Maintain evidence for audits. Because this instrument substitutes a documentation-based accountability mechanism for the exempted subregulations, CASA or auditors are likely to review the approved system of maintenance to verify it "states the name" of required persons. Keep copies of the approved system, records of changes, and supporting documents showing the named persons have accepted responsibilities and have the necessary qualifications and authority.

12. Seek clarification where ambiguous. Where the instrument’s wording raises interpretive questions, such as whether naming a role suffices or whether a corporate entity can be "the person" named, operators should seek formal clarification from CASA or obtain legal advice. The instrument’s cross-references to CAR definitions and to subregulation 51(4) mean that practical compliance requires cross-checked reading of the wider regulatory framework.

This compliance checklist derives from careful reading of the instrument’s text: section 3 (application), section 4 (exemptions), and section 5 (condition). It emphasises documentary actions, governance alignment, and anticipatory planning for the instrument’s repeal.

This is general legal information, not legal advice. I can make mistakes. Before you act on this, rely on it, or use any draft documents or compliance plans suggested here, get a qualified Australian lawyer to check it.