Aircraft Maintenance Tracking for EASA Flying Clubs

A club with four aircraft and thirty members can run surprisingly well on a shared Google Sheet and a whiteboard. Until the day someone flies G-ABCD without noticing it was twelve hours overdue for its 50-hour check, and the instructor who signed the tech log last week is now on holiday in Tenerife.

That scenario is not hypothetical. It happens in clubs across Europe every season. The root cause is almost never negligence — it's a tracking system that was never designed to catch the edge cases.

What Part-CAO Actually Requires You to Track

If your club operates EASA-registered aircraft and manages its own continuing airworthiness, you're operating under Part-CAO (Commission Regulation (EU) 2021/1963, applicable from August 2022 for most organisations). Part-CAO replaced the old Part-M Subpart G framework for smaller operators, and it was specifically designed for clubs, private owners, and small ATOs.

Under Part-CAO, the club must hold an approved Aircraft Maintenance Programme (AMP) for each aircraft. The AMP defines what maintenance tasks are required, at what intervals, and by whom they can be certified. This is not optional and it's not something you can delegate away by contracting maintenance out — even if a local Part-145 organisation does all your physical work, the AMP is still your document and your responsibility to keep current.

Beyond the AMP, Part-CAO requires you to:

• Track compliance with every AMP task, including time-since-last and time-to-next
• Monitor Airworthiness Directives (ADs) applicable to the airframe, engine, propeller, and installed equipment
• Review Service Bulletins (SBs) and make documented decisions on applicability
• Maintain records that demonstrate ARC (Airworthiness Review Certificate) validity
• Record defects and their resolution — squawks, in practical terms
• Ensure the aircraft is not operated when any limitation is exceeded

For a club with three Cessna 172s, this is a meaningful amount of paperwork. For a club with six mixed-type aircraft, it's a part-time job if you're doing it manually.

Where Informal Systems Break Down

Spreadsheets are not the problem. The problem is that spreadsheets don't know when an aircraft flew, don't update themselves, and don't stop anyone from dispatching a grounded aircraft.

Here's where clubs typically get into trouble:

Hobbs time isn't captured consistently. The 50-hour check interval is based on engine hours, not calendar time. If the Hobbs reading at the end of each flight isn't recorded reliably — and in a busy club with multiple instructors, it often isn't — your running total drifts. You might think you have eight hours of margin when you actually have two.

Responsibility is diffuse. In a club, the person who flew the aircraft last Tuesday is not necessarily the person who knows it's due for an oil change next week. Without a clear workflow, important information lives in one person's head. When that person is unavailable, the information is unavailable.

AD compliance tracking is manual and easy to forget. ADs can be one-time actions, repetitive inspections, or life-limited component replacements. Tracking them in a spreadsheet works until someone updates the airframe row but forgets the propeller row, or until a new AD is issued and nobody adds it to the sheet.

Contracted maintenance creates a documentation gap. Many clubs outsource all maintenance to a Part-145 organisation. That's a perfectly valid arrangement under Part-CAO. But the work order, the CRS (Certificate of Release to Service), and the updated task status still need to come back into your records. If the Part-145 shop keeps its own records and you keep yours, and the two are never reconciled, you don't actually know what state your aircraft is in.

Grounding logic isn't enforced. A spreadsheet can show that an aircraft is overdue. It cannot prevent someone from booking it. A system that tracks maintenance but doesn't connect to scheduling is a system that will eventually be ignored.

What a Structured Process Looks Like

For a 3–6 aircraft club, you don't need enterprise software. You need a process that captures the right data at the right time and surfaces problems before they become airworthiness issues.

The core loop is straightforward:

1. Every flight generates a Hobbs/Tach entry that updates the aircraft's running totals
2. Those totals are compared against AMP task intervals automatically
3. When a task is approaching or overdue, the aircraft is flagged — and ideally, blocked from dispatch
4. Defects reported during or after flight are logged and tracked to resolution
5. When maintenance is completed (in-house or by a Part-145 contractor), the CRS is recorded and the task interval resets
6. ADs and SBs are tracked as a separate list, with applicability decisions documented

This sounds obvious. The reason clubs don't do it is that each step requires discipline, and discipline is hard to sustain when the club's maintenance coordinator is a volunteer who also has a day job.

The answer is to reduce the number of steps that require active effort. If Hobbs time is captured automatically at dispatch, you've eliminated one manual step. If the system calculates time-to-next-inspection and surfaces it on the scheduling screen, you've eliminated another. If a squawk reported by a student triggers a maintenance flag that the instructor and coordinator can both see, you've closed a communication gap that would otherwise rely on someone remembering to send an email.

The Part-CAO Compliance Piece

Planebooker's fleet maintenance module is built around this workflow. It tracks 50-hour, 100-hour, and annual inspection intervals against actual Hobbs/Tach data captured at dispatch. Squawk reporting is integrated — any crew member can log a defect, and the aircraft can be grounded until it's resolved. ADs and SBs are tracked per aircraft, with status and applicability notes.

For clubs with CAMO + CAO arrangements, the airworthiness module supports AMP management, ARC tracking, AD/SB monitoring, and quality audit records under Part-CAO. Certifying staff and CRS records are logged. This is not a replacement for a CAMO — if your club is required to hold a CAMO approval, that's a separate regulatory question — but it supports the CAO workflow for clubs operating under Part-CAO directly.

If your club contracts all maintenance to a Part-145 shop, Planebooker still gives you value: you can record the incoming CRS, reset the task interval, and keep the documentation trail in one place rather than in a folder in someone's car.

A Practical Audit of Your Current System

Before you change anything, it's worth understanding where your current process actually stands. Ask yourself:

• Can you tell me, right now, the exact Hobbs time on each aircraft and how many hours remain until the next 50-hour check?
• Do you have a written AMP for each aircraft, and is it current?
• Is there a complete list of applicable ADs for each airframe, engine, propeller, and avionics suite — and can you show the compliance status of each?
• If a pilot reports a defect tonight, what happens to that information? Who sees it, and how is it closed out?
• If your maintenance coordinator became unavailable tomorrow, could someone else pick up where they left off using your current records?

If any of those questions made you uncomfortable, that's the gap to close. The regulatory requirement is real, but the practical risk is more immediate: an untracked defect, a missed inspection, or an expired ARC will ground aircraft at the worst possible time.

Start with the AMP. If you don't have a current, approved AMP for each aircraft, that's the first call to make — either to your national authority or to whoever holds your Part-CAO approval. Everything else in your maintenance tracking process flows from that document.

Once the AMP is solid, the tracking system is what keeps you honest between audits.