v1.1.0 | Last Edited: 12/03/2026
The Aircraft Maintenance Programs Body of Knowledge (AMP-BOK) defines the structured framework of regulatory foundations, methodologies, and best practices governing the development, approval, execution, and continuous optimization of Aircraft Maintenance Programs.
It serves as an authoritative reference for professionals, engineers, CAMO personnel, regulators, trainers, and organizations seeking a consistent and integrated understanding of Aircraft Maintenance Program development and control.
AMP-BOK is openly accessible and can be used as a structured reference for learning, alignment, and professional discussion.
It is developed and maintained by The Lean Airline®. Formal training and certification in its application are provided by The Lean Airline®.
Supporting resources—such as books, articles, and courses—are aligned with specific chapters of the AMP-BOK but do not define the AMP-BOK itself.
The Aircraft Maintenance Programs Body of Knowledge (AMP-BOK) is structured to support progressive professional development in continuing airworthiness and Aircraft Maintenance Program governance. Each chapter contributes to one or more competency levels, which align with typical career stages and certification pathways.
This alignment is expressed as metadata at chapter level, enabling flexible learning paths without duplicating content.
Represents foundational understanding of airworthiness architecture and Aircraft Maintenance Program structure.
Focuses on regulatory framework, certification foundations, maintenance requirement sources, and the composition of an approved AMP.
Intended for engineers, planners, CAMO personnel, quality staff, and professionals requiring structured understanding of maintenance program logic and regulatory compliance.
Represents applied control and performance management of the approved Aircraft Maintenance Program.
Focuses on maintenance task governance, component lifecycle control, reliability monitoring, and data-driven optimization of maintenance effectiveness.
Intended for maintenance program engineers, reliability engineers, and CAMO professionals responsible for AMP execution, adjustment, and continuous improvement.
Represents system-level governance of continuing airworthiness and maintenance operations.
Focuses on organizational accountability, safety management integration, human and organizational factors, and regulatory oversight of maintenance systems.
Intended for senior engineers, compliance managers, postholders, and accountable leaders exercising authority over maintenance program approval and strategic control.
Represents advanced integration of information security governance within continuing airworthiness systems.
Focuses on cybersecurity risk management, aircraft information system integrity, data protection, and regulatory compliance affecting digital maintenance environments.
Intended for Advanced Expert-level professionals assuming responsibility for protecting digital airworthiness infrastructure and managing cyber risk within engineering and maintenance organizations.
Represents advanced understanding of emerging methodologies and technologies shaping the evolution of aircraft maintenance programs.
Focuses on condition-based maintenance, predictive and prognostic maintenance approaches, and emerging maintenance program methodologies such as MSG-4.
Intended for Advanced Expert-level professionals involved in developing future maintenance strategies, integrating predictive technologies, and evolving aircraft maintenance program design.
Defines the global regulatory architecture governing airworthiness and international harmonization mechanisms that ensure aviation safety and mutual recognition across jurisdictions.
1.1. International Civil Aviation Organization (ICAO)
1.2. Civil Aviation Authorities
1.3. EASA System
1.4. FAA System
1.5. Bilateral Aviation Safety Agreements
Defines the approval and certification processes that establish, validate, and sustain an aircraft’s airworthiness throughout its service life.
2.1. Initial Airworthiness
2.2. Operational Approval
2.3. Continuing Airworthiness
2.4. Maintenance
Defines the organizational responsibilities, accountability framework, and controlled processes governing continuing airworthiness management.
3.1. Organizational Accountability and Roles
3.2. Approved Maintenance Control Manual
Defines the approved technical data set that supports the continuing airworthiness of aircraft and conformity to the approved type design, including approved design changes. Establishes Instructions for Continuing Airworthiness (ICA) as the foundational maintenance reference for operators.
4.1. Design Organization Responsibilities for ICA
4.2. ICA in Design Approvals and Changes
4.3. Recognition Under Bilateral Agreements
Defines the structure, content, and governance of the Aircraft Maintenance Program (AMP) as the operator’s approved framework for managing repetitive scheduled maintenance. Establishes its role in translating approved maintenance requirements into controlled planning and maintenance execution.
5.1. AMP Structure and Content
5.2. Development and Approval of the AMP
5.3. Maintenance Planning Document (MPD)
5.4. Maintenance Requirements (Continuing Airworthiness Management)
5.5. Task Cards (Maintenance Execution)
Defines the maintenance requirements established as part of type design certification, including Airworthiness Limitations (ALS) and Certification Maintenance Requirements (CMR), and the initial scheduled maintenance requirements documented in the Maintenance Review Board Report (MRBR), forming the baseline for the development of an approved maintenance program.
6.1. Maintenance Review Board (MRB) Process
6.2. MSG-3 Methodology
6.3 Low and High Utilization Considerations
6.4. System Airworthiness Limitations and Certification Maintenance Requirements (CMR) Derived from System Safety Assessment (SSA)
6.5. Structural Airworthiness Limitations Derived from Damage Tolerance and Fatigue Evaluation
MRB Foundations & MSG-3 Methodology
The MRB Process Made Simple: Key Insights for Airworthiness Professionals
MSG-3 Level 1 – Question 1: Evident or Hidden Functional Failure
MSG-3 Analysis (Part I): All Systems Go - Powerplants Included!
MSG-3 Analysis (Part II): Preventing Structural Deterioration
MSG-3 Analysis (Part IV): Protecting Aircraft from Lightning and Radiated Fields (L/HIRF)
Airworthiness Limitations
CMR (Part I): Understanding Certification Maintenance Requirements and System Safety Analysis
CMR (Part II): Coordinating, Categorizing, and Managing Certification Maintenance Requirements
Fuel Airworthiness Limitations: Preventing Aircraft Fuel Tank Explosions
Operational Context
Industry Case Studies
Training
Defines the structural integrity requirements applicable to ageing aircraft certificated to earlier standards where Damage Tolerance inspection programs and Corrosion Prevention and Control Programs (CPCP) were not originally established within the Airworthiness Limitations (ALS) and the Maintenance Review Board Report (MRBR).
7.1. Supplemental Structural Inspection Program (SSIP)
7.2. Corrosion Prevention and Control Program (CPCP)
Structural Integrity & Corrosion Prevention
Protecting Aircraft Structures with Effective Corrosion Prevention and Control Programs (CPCP)
Aircraft Integrity Under the Surface: Inspection Challenges from Paint and Decals
Industry Case Studies
Training
Defines the maintenance requirements introduced after type certification arising from safety findings, in-service experience, approved design changes, and operational considerations.
8.1. Airworthiness Directives
8.2. Modifications
8.3. Repairs
8.4. Non-mandatory Recommendations
8.5. Embodiment Policy
Post-Type Design Airworthiness Requirements
Understanding Unsafe Conditions and Airworthiness Directives
Guide to an Effective Embodiment Policy for Non-Mandatory Information
Industry Case Studies
Training
Defines the inspections and checks established by air operations regulations to ensure the serviceability and operational readiness of aircraft and required onboard systems and equipment.
9.1. Pre-Flight Check
9.2. Emergency Equipment
9.3. Emergency Locator Transmitter (ELT)
9.4. Flight Recorders
9.5. Weight and Balance
Flight Readiness
Emergency Equipment
Flight Recorders
Training
Defines the additional continuing airworthiness controls required to obtain and maintain specific operational approvals.
10.1. Reduced Vertical Separation Minima (RVSM)
10.2. Performance-Based Navigation (PBN)
10.3. Extended Diversion Time Operations (EDTO/ETOPS)
10.4. All Weather Operations (AWO)
Operational Approval Requirements
Training
Defines the procedural controls governing the planning, scheduling, adjustment, and evolution of maintenance tasks within the approved Aircraft Maintenance Program (AMP).
11.1. Task Effectivity
11.2. Task Interval
11.3. Maintenance Clock
11.4. Grace Period & Compliance Time
11.5. Permitted Variations
11.6. Exceptional Short-Term Extensions
11.7. Task Escalation
11.8. AMP Evolution & Optimization
11.9. Maintenance Checks
11.10. Bridge Programs
Defines the continuing airworthiness controls governing the lifecycle, maintenance, configuration, and movement of aircraft components.
12.1. Component Repair Cycle
12.2. Acceptance of Components
12.3. Life-Limited and Time-Controlled Components
12.4. Configuration Management
12.5. Robbery of Aircraft Components
Describes the systematic process used to collect, process, and analyze reliability data, identify performance deviations, determine root causes, and optimize the effectiveness of the approved Aircraft Maintenance Program (AMP).
13.1. The Reliability Cycle
13.2. Reliability Data
13.3. Deviations from Performance Standards
13.4. Trend Monitoring Programs
13.5. Root Cause Analysis
13.6. AMP Task Effectiveness Analysis
13.7. Reliability Reporting & Decision-Making
Defines the functional responsibilities, organizational interfaces, and governance structure required to support effective continuing airworthiness and maintenance operations.
14.1. Engineering Services
14.2. Maintenance
14.3. Supply Chain and Material Support
14.4. Other Support Functions
14.5. Management Systems and Oversight
14.6. Service Level Agreements (SLA)
Describes the structured approach used to identify hazards, manage safety risks, control critical maintenance tasks, and address human and organizational factors within maintenance operations.
15.1. Hazards & Safety Risks
15.2. Critical Maintenance Tasks and Required Inspections
15.3. Human Factors
15.4. Organizational Factors
15.5. Safety Management Systems (SMS)
Critical Maintenance Tasks
Enter the Matrix (Part I): Decoding Critical Maintenance Tasks
Critical Maintenance Task Matrix Reloaded (Part II): Redefining Safety
Industry Case Studies
A Single Step, a Deadly Outcome: Continental Airlines Flight 1515 Engine Ingestion
Flight 2120: Neglected Low Tyre Pressures and Altered Records
Case Study: Overdue Airworthiness Directive – A Chain of Human and Organizational Factors
Case Study: Life-Limited Part Data Error — from 5,000 to 50,000 Cycles
Training
Describes the structured approach used to identify, assess, and control information security risks affecting aircraft information systems to ensure the continued airworthiness, integrity, availability, and safe operation of aircraft networks and equipment.
16.1. Threats, Vulnerabilities, and Information Security Risks
16.2. Aircraft Information Security Ecosystem
16.3. Airworthiness of Aircraft Information Systems, Networks, and Equipment
16.4. Information Security Management Systems (ISMS)
Aircraft Information Security
Cyberfit to Fly: The Aircraft Information Security Ecosystem
Aircraft Parking and Storage: Managing Information Security Risks
Industry Case Studies
Training
Describes the ongoing evolution of methodologies, technologies, and digital solutions shaping the future of aircraft maintenance and continuing airworthiness management.
17.1. Condition-Based Maintenance (CBM)
17.2. Predictive & Prognostic Maintenance
17.3. MSG-4: The Future of Aircraft Maintenance
17.4. Automation
17.5. Paperless Aircraft Operations
17.6. Blockchain
Future Maintenance Systems
MSG-4: Leveraging Aircraft Health Monitoring for Condition-Based Maintenance
MSG-4: One MSG to Rule Them All (with More Efficiency and Flexibility)
Applying Lean Principles to Aircraft Maintenance Program Processes
Digital Maintenance Transformation
Industry Outlook
Training