--- title: "EASA Implementation Guides, Explained and Cited · Avioverse" description: "EASA guides with practical tables, checklists and FAQs on airworthiness, maintenance, licensing and safety, with cited regulatory sources." url: "https://avioverse.aero/guides" --- Guides # EASA regulations, explained and applied Practical tables, checklists and cited explanations for aviation work. Start with a quick reference for a specific question, or follow a series from first principles to working practice. Regulation quotations include their source and revision. 66 guides in 12 series Last updated 21 Oct 2026 [RSS feed](https://avioverse.aero/guides/feed.xml) ## Quick references Practical comparisons, checklists and FAQs, with sources. - [ETSO, FAA TSO and Certification Specifications Compare ETSO, FAA TSO and EASA certification specifications. Understand article approval, installation limits, DDPs and engineering checks. 6 min](https://avioverse.aero/guides/easa-part-21-certification-specifications-etso) - [EASA Form 1 and FAA Form 8130-3 Acceptance Compare EASA Form 1 and FAA Form 8130-3 for new and maintained components, understand release blocks, and check acceptance and installation limits. 7 min](https://avioverse.aero/guides/easa-part-21-parts-appliances-easa-form-1) - [CAMO, CAO and Part-145: Roles Compared Compare EASA CAMO, CAO and Part-145 responsibilities, approval limits, owner duties and the handover from maintenance planning to release and records. 7 min](https://avioverse.aero/guides/easa-camo-continuing-airworthiness-management-organisation) - [Part-IS Requirements, Deadlines and Checklist Check Part-IS applicability, the 2025 and 2026 deadlines, scope exceptions, approved derogations and the evidence an aviation ISMS needs. 8 min](https://avioverse.aero/guides/part-is-requirements-deadlines) - [EASA Part-66 Licence: Categories and Routes Choose an EASA Part-66 licence route: categories, knowledge, experience, type training and OJT, plus what a Part-145 authorisation adds. 7 min](https://avioverse.aero/guides/easa-part-66-aircraft-maintenance-licence-guide) ## Regulatory foundations How the rulebooks themselves work — reading the EASA system of implementing rules, AMC, GM and CS, and how the FAA, UK CAA and other national systems compare. ### Aviation Regulatory Systems 5 guides · 41 min How to read aviation regulations and how the major regulatory systems compare — the EASA structure of implementing rules, AMC, GM and certification specifications, the FAA's 14 CFR, and the UK CAA, GCAA, GACA and Transport Canada systems that grew from the same ICAO root. 1. [1 How to Read EASA Rules: IR, AMC, GM and CS 13 min](https://avioverse.aero/guides/how-to-read-easa-regulations) 2. [2 EASA Regulatory Map: Which Regulation Applies 7 min](https://avioverse.aero/guides/easa-regulatory-map) 3. [3 EASA vs FAA: A Part-by-Part Comparison 11 min](https://avioverse.aero/guides/easa-vs-faa) 4. [4 UK CAA After Brexit, Compared with EASA 5 min](https://avioverse.aero/guides/uk-caa-after-brexit) 5. [5 GCAA, GACA and Transport Canada Compared 5 min](https://avioverse.aero/guides/national-authorities-gcaa-gaca-tcca) ## Airworthiness and maintenance How an aircraft is designed, certified and kept fit to fly — from initial type certification, through the approved maintenance organisation, to the records that release it back to service. ### EASA Continuing Airworthiness 12 guides · 139 min Continuing airworthiness under Regulation (EU) No 1321/2014 — Part-M responsibilities and the aircraft maintenance programme, reliability monitoring, airworthiness reviews and the ARC, the Part-CAMO/CAO management organisation, maintenance release to service and records, airworthiness directives, and component and life-limited part records. 1. [1 Continuing Airworthiness: Part-M and Part-CAMO 16 min](https://avioverse.aero/guides/easa-continuing-airworthiness-explained) 2. [2 Aircraft Maintenance Programme under Part-M 10 min](https://avioverse.aero/guides/easa-aircraft-maintenance-programme-amp) 3. [3 EASA Reliability Programmes and Monitoring 5 min](https://avioverse.aero/guides/easa-reliability-programme-monitoring) 4. [4 Airworthiness Reviews and the ARC 12 min](https://avioverse.aero/guides/easa-airworthiness-review-certificate-arc) 5. [5 CAMO, CAO and Part-145: Roles Compared 7 min](https://avioverse.aero/guides/easa-camo-continuing-airworthiness-management-organisation) 6. [6 Part-M: Release to Service and Records 11 min](https://avioverse.aero/guides/easa-maintenance-release-to-service-records) 7. [7 EASA Airworthiness Directives and AD Compliance 21 min](https://avioverse.aero/guides/easa-airworthiness-directives-ad-compliance) 8. [8 LLP Back-to-Birth Records and M.A.305 Tracking 17 min](https://avioverse.aero/guides/aircraft-component-records-life-limited-parts) 9. [9 Aircraft Reliability Programme, Step by Step 13 min](https://avioverse.aero/guides/aircraft-reliability-programme-step-by-step) 10. [10 Service Bulletin Evaluation in a CAMO 8 min](https://avioverse.aero/guides/service-bulletin-evaluation-camo) 11. [11 CAMO Staff Competence and Manpower Planning 9 min](https://avioverse.aero/guides/camo-staff-competence-assessment-manpower) 12. [12 CAMO Subcontracting and Maintenance Contracts 10 min](https://avioverse.aero/guides/camo-subcontracting-maintenance-contract) ### EASA Part-145 Maintenance Organisation 9 guides · 74 min The EASA Part-145 approved maintenance organisation under Regulation (EU) No 1321/2014 — terms of approval and privileges, certifying and support staff, maintenance data and performing the work, certification of maintenance and records, the maintenance organisation exposition (MOE), and tool control and calibration under 145.A.40. 1. [1 Part-145: The Approved Maintenance Organisation 4 min](https://avioverse.aero/guides/easa-part-145-approved-maintenance-organisation) 2. [2 Part-145 Certifying and Support Staff 12 min](https://avioverse.aero/guides/easa-part-145-certifying-staff-personnel) 3. [3 Part-145 Maintenance Data and Performance 8 min](https://avioverse.aero/guides/easa-part-145-maintenance-data-performance) 4. [4 Part-145 Maintenance Certification and Records 6 min](https://avioverse.aero/guides/easa-part-145-certification-of-maintenance-records) 5. [5 The Maintenance Organisation Exposition (MOE) 6 min](https://avioverse.aero/guides/easa-part-145-maintenance-organisation-exposition) 6. [6 Part-145 Tool Control and Calibration (145.A.40) 17 min](https://avioverse.aero/guides/part-145-tool-control-calibration-145-a-40) 7. [7 Receiving Inspection of Aircraft Parts: 145.A.42 7 min](https://avioverse.aero/guides/receiving-inspection-aircraft-parts-145-a-42) 8. [8 Part-145 Approved Supplier List and Evaluation 8 min](https://avioverse.aero/guides/part-145-supplier-evaluation-approved-supplier-list) 9. [9 Part-145 Parts Storage, Shelf Life and ESD 6 min](https://avioverse.aero/guides/part-145-parts-storage-shelf-life-esd) ### EASA Part-21 Initial Airworthiness 6 guides · 40 min Initial airworthiness under Regulation (EU) No 748/2012 (Part-21) — the design-to-service lifecycle, certification specifications and ETSO authorisations, type certificates and the TCDS, design and production organisations, certificates of airworthiness and permits to fly, and parts and the EASA Form 1. 1. [1 Airworthiness Lifecycle: Design to Service 6 min](https://avioverse.aero/guides/easa-airworthiness-lifecycle-design-to-service) 2. [2 ETSO, FAA TSO and Certification Specifications 6 min](https://avioverse.aero/guides/easa-part-21-certification-specifications-etso) 3. [3 Type Certification: TC, TCDS and Changes 7 min](https://avioverse.aero/guides/easa-part-21-type-certification-tc-tcds) 4. [4 DOA and POA: Design and Production Organisations 6 min](https://avioverse.aero/guides/easa-part-21-design-production-organisations) 5. [5 Certificates of Airworthiness and Permits to Fly 8 min](https://avioverse.aero/guides/easa-part-21-certificate-of-airworthiness-permit-to-fly) 6. [6 EASA Form 1 and FAA Form 8130-3 Acceptance 7 min](https://avioverse.aero/guides/easa-part-21-parts-appliances-easa-form-1) ## Licensing and training The people who sign for the aircraft and fly it — the engineer and flight-crew licences, and the training organisations that qualify and examine them. ### EASA Part-66 Aircraft Maintenance Licence 5 guides · 39 min The EASA Part-66 aircraft maintenance licence under Regulation (EU) No 1321/2014 — licence categories and privileges, the basic-knowledge module examinations, experience routes and application evidence, and keeping the licence valid through type ratings and renewal. 1. [1 EASA Part-66 Licence: Categories and Routes 7 min](https://avioverse.aero/guides/easa-part-66-aircraft-maintenance-licence-guide) 2. [2 Part-66 Categories: A, B1, B2, B3 and C 7 min](https://avioverse.aero/guides/part-66-licence-categories-explained) 3. [3 Part-66 Modules and Basic Knowledge Exams 8 min](https://avioverse.aero/guides/part-66-modules-examinations-basic-knowledge) 4. [4 Part-66 Licence: Experience and How to Apply 10 min](https://avioverse.aero/guides/part-66-experience-requirements-application) 5. [5 Part-66 Validity: Type Ratings and Renewal 7 min](https://avioverse.aero/guides/part-66-type-ratings-renewal-validity) ### EASA Part-147 Maintenance Training Organisations 3 guides · 13 min The EASA Part-147 maintenance training organisation under Regulation (EU) No 1321/2014 — approval, the MTOE and privileges, basic training and knowledge examinations, aircraft type and task training, with a link to the Part-66 experience and application guide. 1. [1 Part-147 Maintenance Training Organisation 5 min](https://avioverse.aero/guides/easa-part-147-maintenance-training-organisation) 2. [2 Part-147 Basic Training, Exams and Assessment 4 min](https://avioverse.aero/guides/easa-part-147-basic-training-examinations) 3. [3 Aircraft Type and Task Training under Part-147 4 min](https://avioverse.aero/guides/easa-part-147-aircraft-type-task-training) ### EASA Flight Crew Licensing 5 guides · 30 min Flight crew licensing under Part-FCL of Regulation (EU) No 1178/2011 — the LAPL, PPL, CPL, MPL and ATPL licence ladder, theoretical-knowledge exams and the skill test, class, type and instrument ratings, and keeping the licence valid through revalidation, recency and medical. 1. [1 The Path to an EASA Flight Crew Licence 4 min](https://avioverse.aero/guides/how-to-get-easa-flight-crew-licence) 2. [2 EASA Pilot Licences: LAPL, PPL, CPL, MPL, ATPL 5 min](https://avioverse.aero/guides/easa-pilot-licences-explained) 3. [3 EASA Pilot Exams: Theory and the Skill Test 7 min](https://avioverse.aero/guides/easa-pilot-theoretical-knowledge-skill-test) 4. [4 Pilot Ratings: Class, Type and Instrument 5 min](https://avioverse.aero/guides/easa-pilot-class-type-instrument-ratings) 5. [5 Pilot Revalidation, Recency, Language, Medical 9 min](https://avioverse.aero/guides/easa-pilot-licence-revalidation-recency-medical) ## Operations and safety Running the operation and managing its safety and compliance — safety management and SPIs, audits and findings, air operator certification, occurrence reporting under Just Culture, and information-security management. ### Safety Management Systems 2 guides · 34 min Safety management under the EASA management-system rules (145.A.200, CAMO.A.200 and ORO.GEN.200) — safety performance indicators and monitoring, hazard identification and safety risk management, with a worked SPI set and a worked risk register. 1. [1 EASA Safety Performance Indicators (SPIs) 17 min](https://avioverse.aero/guides/easa-safety-performance-indicators-monitoring) 2. [2 EASA Hazard Identification and Risk Management 17 min](https://avioverse.aero/guides/easa-hazard-identification-safety-risk-management) ### Audits, Findings and Compliance Monitoring 3 guides · 51 min How EASA findings work and how organisations answer them — level 1 and level 2 findings and observations, root cause analysis and corrective action plans under 145.A.95, CAMO.A.150 and ORO.GEN.150, and the compliance monitoring audit programme. 1. [1 EASA Level 1 and Level 2 Findings and Deadlines 17 min](https://avioverse.aero/guides/easa-audit-findings-level-1-level-2) 2. [2 Root Cause Analysis for EASA Audit Findings 16 min](https://avioverse.aero/guides/root-cause-corrective-action-easa-findings) 3. [3 Compliance Monitoring Audits: Part-145 and CAMO 18 min](https://avioverse.aero/guides/compliance-monitoring-audit-programme-part-145-camo) ### EASA Air Operations 7 guides · 60 min Commercial air transport under Regulation (EU) No 965/2012 — the structure of Part-CAT and the operator's responsibilities, getting and holding an Air Operator Certificate, the operations manual and the Part-ORO management system, flight time limitations and crew, the Part-SPA specific approvals that extend an operator's privileges, and ramp inspection (SAFA/SACA) findings and the operator's reply. 1. [1 EASA Air Operations: Rules, AOC and Duties 6 min](https://avioverse.aero/guides/easa-air-operations-explained) 2. [2 Apply for an EASA Air Operator Certificate 7 min](https://avioverse.aero/guides/easa-air-operator-certificate-aoc-guide) 3. [3 Part-ORO Operations Manual and Management System 5 min](https://avioverse.aero/guides/easa-operations-manual-management-system) 4. [4 EASA Flight Time Limitations and Crew Duty 14 min](https://avioverse.aero/guides/easa-flight-time-limitations-ftl-guide) 5. [5 Part-SPA Specific Approvals: LVO, PBN, ETOPS 5 min](https://avioverse.aero/guides/easa-specific-approvals-part-spa-guide) 6. [6 SAFA Ramp Inspection Findings: Categories 1 to 3 16 min](https://avioverse.aero/guides/safa-ramp-inspection-findings-categories-response) 7. [7 MEL Rectification Interval Extension (RIE) 7 min](https://avioverse.aero/guides/mel-rectification-interval-extension-rie) ### EASA Occurrence Reporting 5 guides · 32 min Occurrence reporting under Regulation (EU) No 376/2014 — what to report, the 72-hour deadline and data quality, Just Culture protection for reporters, and closing the loop through analysis and follow-up in your SMS. 1. [1 EASA Occurrence Reporting under 376/2014 8 min](https://avioverse.aero/guides/easa-occurrence-reporting-complete-guide) 2. [2 Mandatory vs Voluntary Occurrence Reporting 6 min](https://avioverse.aero/guides/mandatory-vs-voluntary-occurrence-reporting) 3. [3 How to File an Occurrence Report in 72 Hours 6 min](https://avioverse.aero/guides/how-to-file-occurrence-report-deadlines) 4. [4 Just Culture and Occurrence Reporter Protection 7 min](https://avioverse.aero/guides/just-culture-reporter-protection-occurrence-reporting) 5. [5 Occurrence Analysis and Follow-up in the SMS 5 min](https://avioverse.aero/guides/occurrence-analysis-follow-up-sms) ### Part-IS Implementation 4 guides · 35 min Implementing the EASA information-security regulations — (EU) 2022/1645 and (EU) 2023/203 — in maintenance, CAMO and operations organisations: from first concepts to shop-floor practice. 1. [1 Part-IS Requirements, Deadlines and Checklist 8 min](https://avioverse.aero/guides/part-is-requirements-deadlines) 2. [2 Aviation Information Security, Explained 10 min](https://avioverse.aero/guides/aviation-information-security-fundamentals) 3. [3 Aviation Cyber Incidents and Their Lessons 8 min](https://avioverse.aero/guides/aviation-cyber-incidents-lessons) 4. [4 Part-IS Shop-Floor Practice and Reporting 9 min](https://avioverse.aero/guides/part-is-best-practices-reporting)