Expositions for airworthiness organisations
Learn about expositions including who needs to submit one, what they should contain, how they're structured, how they're assessed and what support is available to help you develop one.
Who should read this information?
- CAR 30 Certificate of Approval holders wanting to transition to a Part 145 approved maintenance organisation.
- Air Operator's Certificate holders requiring Subpart 42.G continuing airworthiness management organisation approval.
- Registered training organisations wanting to become a Part 147 maintenance training organisation.
- New entrants wanting to become a:
- Technical writers and exposition and manual writers.
What is an exposition?
An exposition is a document, or set of documents, which describe how your organisation will conduct its activities safely.
It sets out both for CASA and your organisation how you intend to comply with all applicable legislative requirements and manage the safety of your activities.
Do I need to have an exposition?
Yes. All organisations approved under the Civil Aviation Safety Regulations are generally required to have, and use an exposition. This includes Subpart 42.G continuing airworthiness management organisations, Part 145 approved maintenance organisations, Subpart 21.J approved design organisations and Part 147 maintenance training organisations.
What should my exposition include?
The relevant regulations will outline what you must include. Generally, you will need to include information about your organisation, personnel, facilities, policies, systems and procedures for conducting your activities.
Existing manuals for a CASR Subpart 42.G continuing airworthiness management organisation could include your operations manual, safety management system manual, quality management system manual, training manual and other manuals or documents such as training plans, syllabuses and checklists. In this case, these manuals (amended and updated) could form part of your exposition.
Your exposition must accurately reflect how you will conduct your activities. It needs to be written and structured in a way that demonstrates legislative compliance. This will ensure the relevant parts can be readily identified and provided to the people responsible for complying with them.
The procedures in your exposition should also provide enough detail so that your employees can conduct their activities consistently, in line with your intentions.
Each procedure should address, where required:
- what must be done
- who should do it
- who is responsible for it
- when it must be done
- where it must be done
- how it must be done.
Once the relevant authorisation has been issued by CASA, you are obliged to conduct your activities in accordance with your exposition.
How is an exposition structured?
An exposition can be structured as a set of documents, or as a single document.
If structured as a set of documents, your exposition must include the requirements as set out in the following legislation:
- Part 145 - Section 145.A.70 of Part 145 MOS
- Subpart 42.G - Subsection 1.2.1 of Part 42 MOS
- Part 147 - Section 147.A.140 of Part 147 MOS
- Subpart 21.J - Regulation 21.263 of CASR 21
and a cross-reference to show where all other legislative requirements are met. The compliance matrix at the back of the sample exposition can be used to demonstrate compliance if references to manuals relating to specific systems/procedures used when conducting your activities are not contained within the exposition.
CASA provides sample exposition documents for each new regulation. These sample documents contain a recommended table of contents and structure that you can use regardless of whether your exposition is a set of documents or a single document.
Alternatively, you may choose to present your exposition as a single document with all the legislative requirements contained within it.
How should I develop my exposition?
Many of your procedures will already be compliant with the new regulations. Other procedures may need to be modified, or you may need to develop new ones. Therefore, the first step in developing your exposition should be to conduct
an assessment of your existing processes against the new requirements to see what, if any, additional documentation is required, or what needs to be amended.
A CASR Subpart 42.G continuous airworthiness management organisation is required to conduct an annual airworthiness review that confirms the airworthiness status of its aircraft and contains both a records check and physical survey for each aircraft under its approval. This would require the training and authorisation of personnel to carry out the reviews as well as the appropriate procedures and documentation to support the review process.
How much detail should I include in my exposition?
The level of detail to be included in an exposition is determined by the approval being requested, with minimum requirements set by CASA. However, you do not need to duplicate content that already exists in your manual suite.
Instead, you can reference other manuals in your exposition (once they have been amended, if necessary) which contain existing procedures that meet the requirements of the legislation.
If a Part 147 Maintenance Training Organisation (MTO) applies for approval to conduct Recognition of Prior Learning (RPL) assessments, the MTO will need to develop an RPL procedure which includes requirements as detailed in the Acceptable Means of Compliance, for example:
- completion of a self-assessment appraisal against the training standard
- collection of evidence for the development of the package which supports the self-assessment claims
- submission of an RPL application with an opportunity to gather further evidence
- assessments including details of how the competency assessment is carried out.
Note: if any requirements are already obligations under your Registered Training Organisation (RTO) approval a reference to that procedure may be sufficient.
Please note that any changes to documents included or referenced in your exposition are classified as 'significant' or 'non-significant' and need to be managed in accordance with the change management process outlined in your exposition. A full list of significant changes which are relevant to you can be found in the regulations that apply to your activities.
Will one exposition cover the requirements for all my activities?
Organisations are not obliged to create multiple expositions to comply with each CASR Part that requires one. It is up
to each organisation to decide whether they need one exposition or more than one exposition. In some cases,
it might be sensible to have multiple expositions for practical working purposes.
If you choose to have a single exposition covering all the CASR Parts that are relevant to your organisation, you simply need to expand your referencing or compliance matrix to ensure it links to, or references, all the relevant sections in your existing manuals.
If a Part 145 approved maintenance organisation also has a Subpart 21.J approval the compliance can be demonstrated for both expositions and the Design Assurance System Manual within the one exposition. Using this option reduces the need for multiple expositions for an organisation.
Accurate referencing using the compliance matrix available at the back of each sample exposition is required to show full compliance if the sample exposition has not been followed.
Are all expositions the same?
No. There is no single exposition format that will meet the needs of all organisations. The structure and content of your exposition must reflect your particular organisation, including its structure, policies and procedures.
One of the key features of an exposition is that it gives you the freedom to meet the safety outcomes in a way that fits with and is appropriate for, your organisation.
What support is available to help me develop my exposition?
A range of guidance material is available to help organisations develop their expositions and understand the requirements that must be met. This includes sample expositions for:
- CASR Subpart 42.G continuing airworthiness management organisations
- CASR Part 145 approved maintenance organisations
- CASR Part 147 maintenance training organisations
- CASR Subpart 21.J approved design organisations
A Manual Authoring and Assessment Tool is also available on the CASA website to help you prepare expositions and submit them for assessment. The tool provides templates and guidance to make it easier for you to build and submit your exposition.
When do I need to submit my exposition?
Submitting an application for an approval certificate will notify CASA of your intent. A CASA inspector may then contact you to provide further assistance.
For more information, refer to the maintenance regulations section or talk to your local CASA Regional Office.