End-to-End Support for Maintenance Organisation Approval
Establishing an approved maintenance organisation under EASA/UK CAA Part 145 is a complex, resource-intensive process requiring deep regulatory knowledge, structured planning, and precise execution.
At AACS Ltd, we provide comprehensive, end-to-end support to guide organisations from initial concept through to full regulatory approval—ensuring compliance, efficiency, and long-term operational success.
Our Approach
We take a structured, practical, and regulator-aligned approach to Part 145 approvals. Our methodology is designed to:
- Reduce approval timelines
- Minimise regulatory risk
- Ensure full compliance from day one
- Build a scalable and audit-ready organisation
From first engagement to approval and beyond, we act as your trusted partner throughout the entire journey.
Our Services
Part 145 Approval Strategy & Regulatory Engagement
We define a clear approval roadmap aligned with your business objectives and regulatory expectations. This includes:
- Early-stage regulatory strategy development
- Direct engagement with authorities (e.g. UK CAA / EASA)
- Application planning and submission support
- Gap analysis and readiness assessments
Maintenance Organisation Exposition (MOE) Development
The MOE is the cornerstone of your approval. We develop a fully compliant, tailored exposition that reflects your operation:
- Custom MOE authoring (not templates)
- Alignment with regulatory requirements and AMC/GM
- Procedures covering all operational activities
- Integration with Safety Management Systems (SMS)
Organisational Structure & Key Postholder Definition
We help design a compliant and effective organisational framework:
- Definition of Accountable Manager and Nominated Postholders
- Role descriptions and responsibility mapping
- Competency and experience requirements
- Support with recruitment or interim postholder provision (if required)
Facility Planning & Infrastructure Compliance
Your facilities must meet strict regulatory and operational standards. We support:
- Hangar and workshop layout planning
- Compliance with environmental and safety requirements
- Storage, segregation, and material handling processes
- Human factors and workflow optimisation
Tooling, Equipment & Certification Requirements
We ensure your organisation is equipped and compliant from day one:
- Tooling and equipment specification
- Calibration and control systems
- Procurement guidance
- Certification and traceability processes
Capability Scope Definition & Approval Planning
We help define a realistic and strategic approval scope aligned with your business goals:
- Aircraft type and rating selection
- Capability list development
- Phased approval strategies (if applicable)
- Future expansion planning
Why Choose AACS Ltd
- Deep Regulatory Expertise – Extensive experience with UK CAA and EASA frameworks
- Practical Implementation Focus – We don’t just advise—we help you build
- Tailored Solutions – Every organisation is unique; no generic templates
- Efficient Delivery – Structured approach to minimise delays and rework
- End-to-End Support – From concept to approval and operational readiness
Who We Support
We work with a wide range of aviation organisations, including:
- Start-up maintenance organisations
- Expanding MRO providers
- Operators bringing maintenance in-house
- Organisations transitioning between regulatory frameworks
- Investors and aviation groups establishing new capabilities
From Concept to Approval
Whether you are establishing a new organisation or expanding an existing capability, AACS Ltd ensures a smooth, compliant, and efficient path to Part 145 approval.
Get in Touch
If you are planning a Part 145 approval or would like to assess your readiness, speak to our team today.
Contact us to discuss your requirements and start your approval journey with confidence.
Tel: +44 (0) 7930654075
