Can You Manage Airworthiness Without CAMO Under Part-ML?

If you operate under EASA Part-ML and wonder whether you can manage continuing airworthiness without a CAMO (Continuing Airworthiness Management Organisation), the short answer is yes, in many cases — when the rules allow (e.g. non-commercial operations under Part-NCO), you can declare an Aircraft Maintenance Programme (AMP) under ML.A.302(e) and fulfil your responsibility under ML.A.201 without contracting a CAMO. That does not reduce your legal responsibility: the owner remains accountable for continuing airworthiness. This article explains when CAMO is mandatory, what owner-declared AMP means, and common mistakes to avoid.

1. Regulatory Context

Under ML.A.201, the owner is responsible for the continuing airworthiness of the aircraft. That responsibility is not conditional on having a CAMO (Continuing Airworthiness Management Organisation). Part-ML allows the owner to fulfil this obligation by declaring an Aircraft Maintenance Programme (AMP) in accordance with ML.A.302(e), without contracting a CAMO, where the applicable rules permit (e.g. non-commercial operations under Part-NCO).

The legal basis is Commission Implementing Regulation (EU) No 1321/2014 (Part-ML). EASA’s Part-ML material and national implementing rules define when CAMO is mandatory (e.g. certain commercial operations, or when required by the competent authority). For many owner-flown, non-commercial aircraft, declaration of an AMP by the owner is permitted.

2. Practical Interpretation

When CAMO is mandatory: CAMO is typically required when the operation or the state of registration so requires (e.g. commercial operations, AOC holders, or national law). The owner must check the applicable EU and national rules and, if in doubt, confirm with the competent authority.

Owner-declared AMP: Where permitted, the owner may declare an AMP (ML.A.302(e)). The declared AMP must meet the same substantive standards as an approved one (based on MIP and, where applicable, ICA). Declaration means the owner commits to that programme; it does not reduce the owner’s responsibility under ML.A.201. See How to Properly Declare an Aircraft Maintenance Programme (ML.A.302).

Responsibility comparison

3. Common Owner Mistakes

• Assuming “no CAMO” means “no responsibility”. The owner is always responsible for continuing airworthiness. Declaration only changes how the AMP is established, not who is accountable.
• Declaring an AMP that is incomplete. Using a programme that does not meet MIP/ICA or that omits ADs, life limits, or pilot-owner scope leads to findings and potential unairworthiness.
• Believing the Part-66 engineer or maintenance organisation “takes” responsibility. They release their work (CRS); they do not assume the owner’s duty for the overall AMP and AD compliance.
• Not checking national rules. Some states impose CAMO or additional conditions; assuming Part-ML alone is enough can lead to non-compliance.

4. Risk Analysis

What could go wrong? If you operate without CAMO where it is required, the competent authority may treat the aircraft as not in compliance. If you declare an AMP that is inadequate or not followed, you risk findings, grounding, or enforcement. Liability for accidents or incidents remains with the owner to the extent that continuing airworthiness was not assured.

Who is liable? The owner (ML.A.201). CAMO or engineers have their own professional and organisational obligations but do not assume the owner’s regulatory responsibility for continuing airworthiness.

How do findings occur? Audits and oversight check whether a CAMO is required and, if not, whether the declared AMP exists, is complete, and is actually applied. Gaps in the AMP or in AD/record-keeping are common findings.

5. Owner Compliance Checklist

• Confirm whether CAMO is mandatory for your operation and state (EU + national rules).
• If declaring an AMP: ensure it is complete (MIP, ICA where applicable, ADs, life limits, pilot-owner tasks if used). See Declared AMP.
• Declare the AMP in accordance with ML.A.302(e) and national procedures (e.g. written declaration, date, aircraft identification).
• Apply the AMP: all tasks, ADs, and limits complied with and recorded.
• Retain all records (AMP, declarations, maintenance releases, AD status) for the required period.
• Review the AMP when the type design or regulations change; keep the declaration current.

6. FAQ

Is CAMO required if I only fly privately?

Not necessarily. For many non-commercial operations under Part-NCO, the owner may declare an AMP and manage continuing airworthiness without CAMO. National law may still require CAMO in some cases; you must check the applicable regulations and, if needed, the competent authority.

Can I outsource responsibility completely?

No. ML.A.201 assigns responsibility for continuing airworthiness to the owner. You can outsource tasks (e.g. CAMO to manage the AMP, Part-66 to perform and release maintenance), but you cannot outsource the legal duty to ensure the aircraft is maintained in accordance with the AMP and that all ADs and other requirements are met.

Summary: You can manage airworthiness without CAMO where the regulation permits by declaring an AMP (ML.A.302(e)); CAMO is mandatory only when the operation or national law so requires. The owner always remains responsible for continuing airworthiness. Ensure your declared AMP is complete (MIP, ICA where applicable, ADs), properly declared, and actually followed.