The safety standards and requirements for organisations to be approved for the maintenance of aircraft and aeronautical products are set out in Part 145 of the Civil Aviation Safety Regulations (CASR).
Maintenance organisations that hold a Part 145 Approval provide services that meet the requirements of the CASR, related legislation, the Part 145 Manual of Standards, and Acceptable Means of Compliance and Guidance Material (AMC/GM).
This page details the application process to become an Approved Maintenance Organisation (AMO) under Part 145. It applies to:
- new applicants seeking first-time approval to become an Approved Maintenance Organisation – this may include maintenance of aircraft operating under the CAR 1988 requirements.
- current holders of a CAR 30 Certificate of Approval wanting to transition to an Approved Maintenance Organisation under Part 145.
Note: The page includes Relevant Exemptions which can benefit current AMO’s as well as new and transitioning applicants.
We have created some legal exemptions to make certain maintenance activities easier to carry out for Approved Maintenance Organisations (AMO). These exemptions may be relevant to your application.
Exemption CASA EX60/20 – Provision of Specialist Maintenance by a Class D AMO to an Aircraft A rated AMO
It applies to new or current AMOs for:
- the Aircraft Category ‘A’ rating (CAT A AMO) contracting services from Specialist Maintenance Category D1 or D2 rated AMOs
- Specialist Maintenance Category ‘D1 NDT’ or ‘D2 Welding’ (CAT D1 or D2 AMO) on-wing in support for the (CAT A AMO).
The exemption allows the Specialist Maintenance AMO to provide contracted maintenance services and issue a certificate of release to service under its own approval certificate.
If your application proposes to conduct Aircraft “A” rating or Specialist Maintenance “D1 NDT or D2 Welding” rating maintenance activities, and you want to utilise Specialist Maintenance activities as contracted maintenance services in accordance with EX60/20, you must include the relevant requirements within your exposition.
For more details see the legislative instrument CASA EX60/20 – CRS and SM CRS Document to Cover Specialist Maintenance by a Class D AMO.
Also see the AMC/GM provided by Principle AMO.02 Specialist Maintenance.
Note: Applicable current AMO's adopting the CASA EX60/20 instrument must submit a significant change application to be approved by CASA.
Exemption CASA EX41/20 – Part 145 Exposition (CAR Maintenance Activities)
New and current Part 145 AMOs can benefit from this exemption if they want to either:
- consolidate Part 145 and CAR 30 certificates where dual approvals are held
- undertake CAR maintenance activities.
If you propose to undertake CAR 1988 maintenance activities, include the requirements within your exposition. We must be satisfied that you can meet the requirements specified in the Part 145 Assessor Handbook relating to CAR maintenance activities.
For more details see:
- CASA EX41/20 — Part 145 Exposition (CAR Maintenance Activities).
- Sample exposition for Part 145 of CASR – Part 6, section 6.5: Provision of maintenance services for aircraft under the CAR 1988 requirements
- Part 145 technical assessor handbook.
How to Apply
Before you complete the application process, please read the requirements for Part 145 approved maintenance organisations.
You can contact us with questions about your application at any stage.