--- title: "EASA Obligations — Part-M, 145, 147, ML, CAMO, CAO · Avioverse" description: "1,168 obligations from Regulation (EU) No 1321/2014 in plain words — who must do what and when — each pinned to the exact sentence of the rule." url: "https://avioverse.aero/obligations" --- Obligations # What the rules ask you to do You read a rule and still ask: so what do I do now? Ask an AI chatbot and the answer changes with who asks and how. Here every rule is written out as plain actions — who must, may or must not do what, and when — pinned to the exact sentence it comes from, the same for everyone. 1,168 obligations from 151 rules in 6 Parts Checked against the text in force, including Implementing Regulation (EU) 2026/100 ## Regulation (EU) No 1321/2014 6 Parts - [Part-M — Continuing airworthiness Keeping aircraft airworthy where Part-ML does not apply, including every aircraft listed in the operating certificate of a licensed air carrier. Annex I · 232 must · 19 may · 28 must not · for Owner, Operator, CAO 279 obligations](https://avioverse.aero/obligations/part-m) - [Part-145 — Maintenance organisations Approval of organisations that maintain aircraft and components, and of the staff who certify their work. Annex II · 205 must · 27 may · 6 must not · for Maintenance organisation, Certifying staff, Accountable manager and nominated persons 238 obligations](https://avioverse.aero/obligations/part-145) - [Part-147 — Maintenance training organisations Approval of organisations that train and examine for Part-66 aircraft maintenance licences. Annex IV · 70 must · 20 may · 3 must not · for Training organisation, Instructors, examiners and assessors, Accountable manager and nominated persons 93 obligations](https://avioverse.aero/obligations/part-147) - [Part-ML — Continuing airworthiness of light aircraft Aeroplanes up to 2 730 kg, helicopters up to 1 200 kg with up to four occupants, other ELA2 and light non-conventional aircraft, when they are not complex motor-powered and not in an air carrier's operating certificate. Annex Vb · 223 must · 28 may · 24 must not · for Owner, CAO, CAMO 275 obligations](https://avioverse.aero/obligations/part-ml) - [Part-CAMO — Continuing airworthiness management organisations Approval of organisations that manage the continuing airworthiness of aircraft and components. Annex Vc · 108 must · 17 may · 2 must not · for CAMO, Accountable manager and nominated persons, Airworthiness review staff 127 obligations](https://avioverse.aero/obligations/part-camo) - [Part-CAO — Combined airworthiness organisations Approval of organisations that maintain and manage aircraft that are not complex motor-powered and not in an air carrier's operating certificate. Annex Vd · 124 must · 28 may · 4 must not · for CAO, Accountable manager and nominated persons, Certifying staff 156 obligations](https://avioverse.aero/obligations/part-cao) ## Why this library exists Without it With the obligations library Without it You read a rule and still ask: so what do I do now? With the obligations library Each rule is split into actions: who must, may or must not do what, and when. Without it An AI chatbot answers differently depending on who asks and how they ask. With the obligations library One list, written once from the rule text, the same for every reader. Without it A summary drops the condition or the exception that applies to you. With the obligations library Every action keeps its condition and shows the exact sentence it comes from. Without it Notes and checklists keep quoting rules that were deleted or rewritten. With the obligations library Checked word for word against the text in force, with the date of the check. ## How to read an obligation A real one, from M.A.305. - Must Enter the aircraft CRS required by M.A.801 or 145.A.50, as applicable, in the aircraft continuing airworthiness record system. After completion of any maintenance. - Who Owner · Operator - When On an event - Time limit as soon as practicable; no later than 30 days Rule text M.A.305(a) > (a) At the completion of any maintenance, aircraft certificate of release to service (‘CRS’) required by point M.A.801 or point 145.A.50, as applicable, shall be entered in the aircraft continuing airworthiness record system, as soon as practicable and no later than 30 days after the completion of any maintenance. M.A.305(a) · Regulation (EU) No 1321/2014 · verbatim How to read this page - Must · May · Must not A duty, a permission, a prohibition — as the rule words it. - The action What to do, in plain words, with the rule's own terms kept. - If, When, For … The condition or exception that limits it. Check it first. - When Always (a standing condition) · On an event (something happens, or before you act) · Periodically · Once. - Time limit The deadline, interval or retention period the rule sets. - Rule text The exact sentence the obligation comes from. It is what binds; read it before relying on the summary. - Show what applies to A viewpoint, not a profile — switch it any time, or share the link. * Written from the implementing rules of Regulation (EU) No 1321/2014 — Section A and the appendices that set requirements — as amended up to Implementing Regulation (EU) 2026/100. * Every quoted sentence was checked word for word against that text. * AMC and GM are not included: they show ways to comply; this list is what the rule itself requires. Section B, what the competent authority does, is not included. * A summary can lose a nuance. The rule text binds, together with your approved exposition and your competent authority. Not the official publication — verify against the Official Journal of the European Union before operational use.