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Continuing Airworthiness: Part-M and Part-CAMO

EASA continuing airworthiness under Regulation (EU) No 1321/2014: the Part-M to Part-CAMO Annex map, who is responsible, and the core airworthiness tasks.

Dionysis Kefalas16 min readFor CAMO and Part-145 staff

Part 1 of 8 in EASA Continuing Airworthiness Show parts
  1. 1Continuing Airworthiness: Part-M and Part-CAMO
  2. 2Aircraft Maintenance Programme under Part-M
  3. 3EASA Reliability Programmes and Monitoring
  4. 4Airworthiness Reviews and the ARC
  5. 5CAMO and CAO Continuing Airworthiness Bodies
  6. 6Part-M: Release to Service and Records
  7. 7EASA Airworthiness Directives: AD Compliance Explained
  8. 8LLP Back-to-Birth Records and Component Tracking (M.A.305)

Quotes checked on against EASA Easy Access Rules for Continuing Airworthiness (Regulation (EU) No 1321/2014) — 2 Sep 2025 revision.

On this page

What continuing airworthiness is

The certificate of airworthiness sits in the aircraft documents. It was issued once. Keeping the aircraft in a condition for flight, day after day, is continuing airworthiness, and Regulation (EU) No 1321/2014 is the regulation. The quotes on this page are the current text of the EASA Easy Access Rules for Continuing Airworthiness, 2025-09-02 revision.

Where a quote opens with "Regulation (EU)", that line is the enactment tag stored with the text. The rule follows it.

What the regulation covers

Article 1 (full rule text)Subject-matter and scope

Regulation (EU) 2015/1536

This Regulation establishes common technical requirements and administrative procedures to ensure:

(a)the continuing airworthiness of aircraft, including any component for installation thereto, which are:

(i)registered in a Member State, unless their regulatory safety oversight has been delegated to a third country and they are not used by an EU operator; or

(ii)registered in a third country and used by an EU operator, where their regulatory safety oversight has been delegated to a Member State;

(b)compliance with the essential requirements set out in Regulation (EC) No 216/2008 for continuing airworthiness of aircraft registered in a third country and components for installation thereon for which their regulatory safety oversight has not been delegated to a Member State that are dry leased-in by a licence air carrier in accordance with Regulation (EC) No 1008/2008 of the European Parliament and the Council.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

Article 1 is the subject-matter. Points (a) and (b) are the scope. Read them as printed.

Which annex applies

Article 3 (full rule text)Continuing airworthiness requirements

Regulation (EU) 2021/700

1.The continuing airworthiness of aircraft referred to in point (a) of Article 1 and components for installation thereon shall be ensured in accordance with the requirements of Annex I (Part-M), except for aircraft listed in the first subparagraph of paragraph 2 to which the requirements of Annex Vb (Part-ML) shall apply.

2.The requirements of Annex Vb (Part-ML) shall apply to the following other than complex motor-powered aircraft:

(a)aeroplanes of 2 730 kg maximum take-off mass or less;

(b)helicopters of 1 200 kg maximum take-off mass or less, certified for a maximum of up to four occupants;`

(c)other ELA2 aircraft;

(d)non-conventional aircraft with a maximum take-off mass of:

(i)1 200 kg or less if they can maintain zero horizontal speed in flight; or

(ii)2 730 kg or less for other than those in point (i).

Where an aircraft referred to in the first subparagraph is listed in the air operator certificate of an air carrier licensed in accordance with Regulation (EC) No 1008/2008, the requirements of Annex I (Part-M) to this Regulation shall apply.

3.In order to be listed in the air operator certificate of an air carrier licensed in accordance with Regulation (EC) No 1008/2008, an aircraft referred to in paragraph 2, first subparagraph, shall comply with all of the following requirements:

(a)its aircraft maintenance programme has been approved by the competent authority in accordance with point M.A.302 of Annex I (Part-M);

(b)due maintenance required by the maintenance programme referred to in point (a) has been performed and certified in accordance with point 145.A.48 and 145.A.50 of Annex II (Part-145);

(c)an airworthiness review has been performed and a new airworthiness review certificate has been issued in accordance with point M.A.901 of Annex I (Part-M).

4.By way of derogation from paragraph 1 of this Article, the continuing airworthiness of aircraft referred to in point (a) of Article 1, for which a permit to fly has been issued, shall be ensured on the basis of the specific continuing airworthiness arrangements defined in the permit to fly issued in accordance with Annex I (Part-21) to Commission Regulation (EU) No 748/2012.

5.Aircraft maintenance programmes for aircraft referred to in point (a) of Article 1 that comply with the requirements specified in point M.A.302 of Annex I (Part-M) applicable before 24 March 2020 shall be deemed to comply with the requirements specified in point M.A.302 of Annex I (Part-M) or point ML.A.302 of Annex Vb (Part-ML), as applicable, in accordance with paragraphs 1 and 2.

6.Operators shall ensure the continuing airworthiness of aircraft referred to in point (b) of Article 1 and components for installation thereon in accordance with the requirements of Annex Va (Part-T).

7.The continuing airworthiness of aeroplanes with a maximum certificated take-off mass at or below 5 700 kg which are equipped with multiple turboprop engines shall be ensured in accordance with the requirements applicable to other than complex motor-powered aircraft as set out in points M.A.201, M.A.301, M.A.302, M.A.601 and M.A.803 of Annex I (Part-M), point 145.A.30 of Annex II (Part-145), points 66.A.5, 66.A.30, 66.A.70, Appendix V and VI of Annex III (Part-66), point CAMO.A.315 of Annex Vc (Part-CAMO), point CAO.A.010 and Appendix I of Annex Vd (Part-CAO) to the extent that they apply to other than complex motor-powered aircraft.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

Point (a) of paragraph 3 does not mention an indirect procedure.

The maintenance-programme guide quotes the programme rules. It does not repeat the aircraft list in paragraph 2.

The annexes

AnnexPartWhat the quotes on this page support
IPart-MDefault continuing-airworthiness requirements. Article 3(1).
IIPart-145145.A.10, quoted below.
IIIPart-6666.A.1, quoted below.
IVPart-147147.A.05, quoted below.
VaPart-TArticle 3(6).
VbPart-MLAircraft listed in Article 3(2), unless the sentence after that list keeps them in Part-M.
VcPart-CAMOContinuing airworthiness management organisations, as the M.A.201 quotes below name them.
VdPart-CAOCombined airworthiness organisations, as the M.A.201 quotes below name them.
145.A.10 (full rule text)Scope

This Section establishes the requirements to be met by an organisation to qualify for the issue or continuation of an approval certificate for the maintenance of aircraft and components.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

66.A.1 (full rule text)Scope

Regulation (EU) No 1321/2014

This section defines the aircraft maintenance licence and establishes the requirements for application, issue and continuation of its validity.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

147.A.05 (full rule text)Scope

Regulation (EU) No 1321/2014

This section establishes the requirements to be met by organisations seeking approval to conduct training and examination as specified in Annex III (Part-66).

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

The aircraft maintenance licence has its own series. Part-145 and Part-147 are named here and are not this series. This series stays with continuing airworthiness management: Part-M, Part-ML, and the CAMO and CAO.

Who is responsible

M.A.201(a) (full rule text)Owner responsibilities

(a)The owner of the aircraft shall be responsible for the continuing airworthiness of aircraft and shall ensure that no flight takes place unless all of the following requirements are met:

(1)the aircraft is maintained in an airworthy condition;

(2)any operational and emergency equipment fitted is correctly installed and serviceable or clearly identified as unserviceable;

(3)the airworthiness certificate is valid;

(4)the maintenance of the aircraft is performed in accordance with the AMP specified in point M.A.302.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(b) (full rule text)Lessee responsibilities

Regulation (EU) No 1321/2014

(b)When the aircraft is leased, the responsibilities of the owner are transferred to the lessee if:

1.the lessee is stipulated on the registration document; or

2.detailed in the leasing contract.

When reference is made in this Part to the ‘owner’, the term owner covers the owner or the lessee, as applicable.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

Point (b) is the lease case. The last sentence is how this Part uses the word owner.

The tasks are then placed according to the aircraft and the operation. The points below are quoted in full. Read the quoted point for the boundary.

The library heading on M.A.201(e) says licenced air carriers. The opening line of the body is stored as shown.

M.A.201(e) (full rule text)Responsibilities — Licenced air carriers (LAC)

(e)No 1008/2008 the operator shall be responsible for the continuing airworthiness of the aircraft it operates and shall:

(1)ensure that no flight takes place unless the conditions set out in point (a) are met;

(2)take the necessary steps to ensure its approval as a continuing airworthiness management organisation (‘CAMO’) pursuant to Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), as part of air operator certificate for the aircraft it operates;

(3)take the necessary steps to ensure its approval in accordance with Annex II (Part-145) or conclude a written contract in accordance with point CAMO.A.315(c) of Annex Vc (Part-CAMO) or point M.A.708(c) of this Annex (Part-M) with an organisation which has been approved in accordance with Annex II (Part-145).

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(eb) (full rule text)Responsibilities – Termination of AOC affecting compliance with One CAMO

(eb)By derogation to point (e)(2), when the termination or revocation of an air operator certificate results in a situation where an air carrier licensed in accordance with Regulation (EC) No 1008/2008 and forming part of an air carrier business grouping is no longer in compliance with point M.A.201(ea), that licensed air carrier shall define and implement an action plan to the satisfaction of the competent authority to comply with point M.A.201(e)(2) as soon as practicable.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

The opening line of M.A.201(ea) is stored as shown.

M.A.201(ea) (full rule text)Responsibilities – One CAMO for single air carrier business grouping

(ea)grouping may use the same CAMO to assume the responsibility for the continuing airworthiness management of all the aircraft they operate, provided that all of the following requirements are met:

(1)the CAMO is approved in accordance with Annex Vc (Part-CAMO) for the aircraft to be managed;

(2)the CAMO forms part of the same air carrier business grouping as the operators concerned;

(3)a contract is established in accordance with Appendix I to this Annex between the CAMO and the AOC holder not itself approved as a CAMO;

(4)the CAMO has its principal place of business in the territory to which the Treaties apply;

(5)the individual management systems of the organisations concluding a contract are harmonised with each other.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(f) (full rule text)Responsibilities — Complex aircraft used for commercial operation other than LAC

(f)For complex motor-powered aircraft used for commercial specialised operations, for CAT operations other than those performed by air carriers licensed in accordance with Regulation (EC) No 1008/2008 or by commercial Approved Training Organisations (‘ATO’) and Declared Training Organisations (‘DTO’) referred to in Article 10a of Regulation (EU) No 1178/2011, the operator shall ensure that:

(1)no flight takes place unless the conditions set out in point (a) are met;

(2)the tasks associated with continuing airworthiness are performed by a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M); when the operator is not a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), it shall conclude a written contract as regards the performance of those tasks in accordance with Appendix I to this Annex with an organisation approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M);

(3)the CAMO referred to in point (2) is approved in accordance with Annex II (Part-145) as an organisation to qualify for the issue of an approval for the maintenance of aircraft and of components for installation thereon, or that CAMO has concluded a written contract in accordance with point CAMO.A.315(c) of Annex Vc (Part-CAMO) or point M.A.708(c) of this Annex (Part-M) with organisations approved in accordance with Annex II (Part-145).

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(g) (full rule text)Responsibilities — Complex aircraft used for private operation

(g)For complex motor-powered aircraft not included in points (e) and (f), the owner shall ensure that:

(1)no flight takes place unless the conditions set out in point (a) are met;

(2)the tasks associated with continuing airworthiness are performed by a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M); when the owner is not a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), it shall conclude a written contract as regards the performance of those tasks in accordance with Appendix I to this Annex with an organisation approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M);

(3)the CAMO referred to in point (2) is approved in accordance with Annex II (Part-145) as an organisation to qualify for the issue of an approval for the maintenance of aircraft and of components for installation thereon, or that CAMO has concluded a written contract in accordance with point CAMO.A.315(c) of Annex Vc (Part-CAMO) or point M.A.708(c) of this Annex (Part-M) with organisations approved in accordance with Annex II (Part-145).

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(h) (full rule text)Responsibilities — Non-complex aircraft used for commercial operation other than LAC

(h)For aircraft other than complex motor-powered aircraft used for commercial specialised operations or for CAT operations other than those performed by air carriers licensed in accordance with Regulation (EC) No 1008/2008, or by commercial ATOs and commercial DTOs referred to in Article 10a of Regulation (EU) No 1178/2011, the operator shall ensure that:

(1)no flight takes place unless the conditions set out in point (a) are met;

(2)the tasks associated with continuing airworthiness are performed by a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), or a combined airworthiness organisation (‘CAO’) approved in accordance with Annex Vd (Part-CAO); when the operator is not a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), or a CAO approved in accordance with Annex Vd (Part-CAO), it shall conclude a written contract in accordance with Appendix I to this Annex with a CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M), or a CAO approved in accordance with Annex Vd (Part-CAO);

(3)the CAMO or CAO referred to in point (2) is approved in accordance with Annex II (Part-145) or in accordance with Subpart F of this Annex (Part-M) or as a CAO with maintenance privileges, or that CAMO or CAO has concluded a written contract with organisations approved in accordance with Annex II (Part-145) or in accordance with Subpart F of this Annex (Part-M) or Annex Vd (Part-CAO) with maintenance privileges.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

The M.A.201(i) body is stored without a leading "(i)".

M.A.201(i) (full rule text)Responsibilities — Non-complex aircraft used for private operation

For aircraft other than complex motor-powered aircraft not included in points (e) and (h), or used for limited operations, the owner shall ensure that flight takes place only if the conditions set out in point (a) are met. To that end, the owner shall:

(1)attribute the continuing airworthiness tasks referred to in point M.A.301 to a CAMO or CAO through a written contract concluded in accordance with Appendix I; or

(2)carry out those tasks himself; or

(3)carry out those tasks himself except the tasks of the development of and the processing of the approval of the AMP, only if those tasks are performed by a CAMO or CAO through a limited contract concluded in accordance with point M.A.302.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

M.A.201(k) (full rule text)Mixed Operation

Regulation (EU) 2020/270

(k)Where an aircraft included in an air operator certificate is used for non-commercial operations or specialised operations under point ORO.GEN.310 of Annex III or point NCO.GEN.104 of Annex VII to Regulation (EU) No 965/2012, the operator shall ensure that the tasks associated with continuing airworthiness are performed by the CAMO approved in accordance with Annex Vc (Part-CAMO) or Subpart G of this Annex (Part-M) or the combined airworthiness organisation (“CAO”) approved in accordance with Annex Vd (Part-CAO), whichever applicable, of the air operator certificate holder.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

Do not treat M.A.201(f) or M.A.201(h) as a repaired opening for M.A.201(e).

The CAMO and CAO guide quotes the organisation. It does not restate these points.

What keeping it airworthy involves

M.A.301 (full rule text)Continuing airworthiness tasks

The aircraft continuing airworthiness and the serviceability of operational and emergency equipment shall be ensured by:

(a)the accomplishment of pre-flight inspections;

(b)the rectification of any defect and damage affecting safe operation in accordance with data specified in points M.A.304 and M.A.401, as applicable, while taking into account the minimum equipment list (‘MEL’) and configuration deviation list, when they exist;

(c)the accomplishment of all maintenance in accordance with the AMP referred to in point M.A.302;

(d)the release of all maintenance in accordance with Subpart H;

(e)for all complex motor-powered aircraft or aircraft used by air carriers licensed in accordance with Regulation (EC) No 1008/2008, the analysis of the effectiveness of the approved AMP referred to in point M.A.302;

(f)the accomplishment of any applicable:

(1)airworthiness directive (AD);

(2)operational directive with a continuing airworthiness impact;

(3)continuing airworthiness requirement established by the Agency;

(4)measures required by the competent authority in immediate reaction to a safety problem;

(g)the accomplishment of modifications and repairs in accordance with point M.A.304;

(h)delivering to the pilot-in-command, or to the operator in the case of air carriers licensed in accordance with Regulation (EC) No 1008/2008, the mass and balance statement reflecting the current configuration of the aircraft;

(i)maintenance check flights, when necessary.

Quoted word for word from Regulation (EU) No 1321/2014, Easy Access Rules for Continuing Airworthiness, 2 Sep 2025 revision.

The programme is the next guide. The reliability guide quotes (e) again.

M.A.201(a) is the condition for a flight. M.A.301 is the task list. Requirement (4) is one condition in (a). It is not a label for every task in the list.

How this series is organised

This guide is the map.

The maintenance-programme guide quotes the programme rule, including approval. The aircraft list for Part-ML stays in Article 3 above.

The reliability guide quotes M.A.301(e) again. Anything further it quotes from the maintenance-programme rule is quoted there, not here.

The airworthiness-review guide is the review. This page does not quote those rules.

The CAMO and CAO guide quotes the management system, the people, the CAO limit, and the exposition.

The release and records guide is the release and the records.

The airworthiness directives guide takes item (f)(1) of M.A.301 further: reading an AD and recording compliance.

The component records guide is the record for life-limited parts and time-controlled components, and what transfers with the aircraft.

Where to read it yourself

The text is Regulation (EU) No 1321/2014, consolidated in the EASA Easy Access Rules for Continuing Airworthiness, free to download. Every citation in this guide was checked against the 2025-09-02 revision.

Educational content, not regulatory compliance advice. Verify against the current regulation text before relying on it.