Aircraft Maintenance Training Matrix for UK MRO Teams

Quick answer

Use one matrix with separate columns for the UK Part-66 Aircraft Maintenance Licence (AML), category detail (A, B1, B2 and so on), each aircraft type rating or type-training endorsement, human-factors and EWIS/fuel-tank safety continuation dates, and the company Part-145 certifying or support-staff authorisation. Calculate status from real dates, attach the licence or certificate file beside the date, and filter by shift or bay before a heavy check or line cover window. FieldClear imports the spreadsheet you already keep and surfaces expired, expiring and missing rows — it does not issue licences or authorisations.

Why MRO matrices fail in Excel

Hangar and line teams mix evidence sources: CAA licence printouts, type-course certificates, internal authorisation letters and continuation-training attendance sheets. In a shared workbook those layers collapse into one “licensed – current” cell. The sheet stays green while the engineer needed for a B2 avionics release holds only a mechanical category, or while the AML is valid but the company authorisation letter expired at the last quality review. Two planners then work from different copies after a night shift, and the gap appears only when a work package is already committed.

• AML validity, category code, type endorsement and company authorisation must stay on distinct rows or columns
• Continuation training (human factors, EWIS, fuel tank safety) must not overwrite the licence expiry
• Limitations and exclusions belong in structured fields, not free-text comments that sorting ignores
• Agency and contractor certifying cover needs the same discipline as direct employees

What to put on the grid

Start from the requirements your exposition and quality procedures actually assign — not from a generic construction-style card list. Typical columns for a UK MRO or Part-145-style organisation include the parent AML number and expiry, Part-66 category and subcategory with limitations, named type ratings, Part-145 certifying authorisation reference and review date, aviation human-factors continuation, EWIS/FTS modules where assigned, and any airside permit or first-aid requirement your site rules add. Keep Category A mechanics distinct from B1 and B2 certifying depth so a green filter never implies release privileges the holder does not have.

How teams usually start in FieldClear

1. Upload the training or authorisation matrix you already maintain for hangar and line staff.
2. Map columns so AML, category, type and company authorisation stay separate requirements.
3. Attach licence scans, type certificates and authorisation letters to the matching rows.
4. Set reminder horizons that match CAA renewal and internal quality review lead times.
5. Filter named teams before a heavy check, overnight line window or outstation cover.

Official sources and operational trackers

Confirm Part-66 pathways and renewal expectations from the CAA, not from a planner’s memory. Start with Part-66 general guidance and the CAA’s page on how to renew a UK Part-66 aircraft maintenance licence. For day-to-day expiry control once holdings are captured, use FieldClear’s aircraft maintenance training matrix vertical, the UK Part-66 AML expiry tracker, and training matrix software when you are ready to leave dual spreadsheet copies behind.

Honest limits

FieldClear tracks the training and authorisation records your organisation assigns. It does not grant CAA privileges, issue or renew Part-66 licences, certify airworthiness, expand task scope, or replace your Part-145 authorisation, quality or release-to-service systems. This guide is operational information for record-keeping — it is not legal or aviation regulatory advice. Always verify licence status with the CAA where your process requires it.