You've completed your PDRA01. You've got your drone registered. You're flying by the rules. But are you keeping the flight records that prove it? Here's the reality: the CAA doesn't just care that you fly. They care that you can prove every flight was legal, documented, and accountable. We've seen professional operators fail CAA audits—not because they flew dangerously, but because their flight logs were incomplete, scattered, or missing entirely. This guide walks you through exactly what the CAA expects to see in your Remote Pilot Flight Log, and how to build a system that keeps you protected.

What Is a Remote Pilot Flight Log?

A Remote Pilot Flight Log is your official record of every commercial operation. It documents who flew, where, when, for how long, and what aircraft was used. For operators holding an Operation Approval (OA) or PDRA01 authorization, maintaining accurate flight records isn't optional—it's a legal requirement enforced by the CAA.

🐣
Piyo 🐣 (Beginner Pilot)

🐣 Piyo: "Is a flight log just for professional pilots? I only do occasional work."

:::

🦉
Poppo 🦉 (Compliance Expert)

🦉 Poppo: "If you're operating commercially under an OA or PDRA01, you need flight records. The CAA audits these regardless of how many flights you do per month. What matters is the authorization level, not flight frequency. Even a single commercial operation must be logged."

:::

What Must Your Flight Log Contain?

The CAA expects these core elements in every flight log entry. This is drawn directly from the PDRA01 Remote Pilot Logbook template they provide:

Pilot & Operator Identification
  • Remote Pilot name (full name, not initials)
  • Flyer ID (Operational Approval number or PDRA01 number)
  • Operator organization name (if applicable)

Flight Date & Time
  • Date of operation (day/month/year)
  • Take-off time (if recording time-based limits)
  • Landing time (for duration calculation)

Location Information
  • Take-off location (address or grid reference)
  • Landing location (same or different from take-off)
  • Airspace classification (A, C, D, E, or G)
  • Distance from congested areas (if relevant to your authorization)

Aircraft Identification
  • UAS serial number (manufacturer serial)
  • Aircraft registration number (if registered with CAA)
  • Aircraft type and mass (for the 100g threshold verification from January 2026)

Flight Duration & Category
  • Total flight duration (hours/minutes)
  • Day operations vs. night operations (separately recorded)
  • Operational category (BVLOS, EVLOS, Urban, etc.)
  • Description of operation (e.g., "Residential roof survey," "Agricultural field mapping")

Remarks & Unusual Occurrences
  • Any technical issues encountered
  • Any near-miss incidents
  • Weather conditions affecting flight
  • Any deviations from planned operation
  • Regulatory alerts or changes applied

Signature & Timestamp
  • Pilot signature or digital confirmation
  • Date entry was recorded
  • Person responsible (same as pilot or supervisor)

🐮
Moo 🐮 (MmowW Founder)

🐮 Moo: "How detailed do the remarks need to be? Can I just write 'survey completed'?"

:::

🦉
Poppo 🦉 (Compliance Expert)

🦉 Poppo: "Not quite. The CAA uses flight log details to verify you understand your authorization limits. 'Survey completed' tells them nothing. Try: 'Residential property survey, 15 waypoints, max height 80m, good visibility, no incidents.' This shows you were aware of your flight profile and the conditions. Detail is protection."

:::

The CAA's PDRA01 Template Structure

The CAA provides the CAP 2606A Remote Pilot Logbook Template as the official format. Here's what it includes:

  • Front matter: Operator details, authorization number, aircraft info
  • Flight entry columns: Date, pilot name, flyer ID, aircraft serial, location, duration (day/night separate), description, remarks
  • Pre-flight section: Aircraft condition checks before each flight
  • Post-flight section: Any damage, maintenance required
  • Monthly summary: Total hours by category (day, night, BVLOS, etc.)
  • Attestation: Signature line confirming all entries are accurate

You can use the CAA template directly, or build your own system as long as it captures all the same data points.

Retention Period: How Long Must You Keep Flight Logs?

Minimum: 2 years from the date of operation.

This is non-negotiable. The CAA can request records going back 24 months at any point without notice. If you've deleted, lost, or "can't find" logs from an audit period, this is viewed as a serious compliance failure. For commercial operators managing multiple aircraft or running high-volume operations, we recommend 3-5 years to account for:

  • Insurance claims that may reference older flights
  • Litigation involving clients or incidents
  • Regulatory investigations or accident enquiries

> Poppo's Note: If you're using a cloud-based system like MmowW, your flight logs are automatically timestamped, encrypted, and backed up across redundant servers. You'll never accidentally delete audit evidence. If you're using spreadsheets or paper logs, set a calendar reminder to archive records every 12 months into a separate storage location you don't touch.

How the CAA Audits Flight Logs

When the CAA conducts an inspection or audit, here's exactly what they check:

1. Completeness
  • Is every flight recorded?
  • Are all required fields filled in for each entry?
  • Are there unexplained gaps in the logbook?

2. Accuracy
  • Do flight hours add up correctly across the month?
  • Do aircraft serial numbers match your registration records?
  • Do pilot names and flyer IDs correspond to authorized personnel?

3. Compliance
  • Are all flights within your authorization limits (BVLOS, EVLOS, altitude, distance)?
  • Are night flights only logged by appropriately qualified pilots?
  • Are airspace restrictions respected and noted?

4. Traceability
  • Can you identify who flew each operation?
  • Are there clear signatures, timestamps, or digital records?
  • Is there an audit trail if entries are modified?

For PDRA01 oversight, the CAA specifically requests the last 3 flights during routine checks. This means your three most recent operations must be immediately accessible and completely documented.

🐣
Piyo 🐣 (Beginner Pilot)

🐣 Piyo: "What if we find a mistake in an old flight log entry?"

:::

🦉
Poppo 🦉 (Compliance Expert)

🦉 Poppo: "Don't erase or overwrite it. Strike through the original entry with a single line, write 'Corrected' and the date, then add the correct information below. Digital systems should log the change with a timestamp and user ID. This demonstrates data integrity to the CAA, not an attempt to hide something."

:::

Common Mistakes That Fail CAA Audits

1. Incomplete Flight Descriptions

Many operators write "Survey work" or "Training flight" with no detail. The CAA asks specific follow-ups: "What altitude did you operate at?" If your logbook doesn't contain that information, you fail. Include waypoints, altitudes, purposes, and any regulatory decisions.

2. Missing Remarks on Incidents

A near-miss, equipment malfunction, or weather diversion must be noted. If your logbook shows a 2-hour operation but you only flew 40 minutes, the CAA notices. Write: "Weather deteriorated 14:30, returned to base early. Remained safe."

3. Illegible Handwriting

Scribbled notes are treated as incomplete records. If the CAA can't read "residential survey" or "BVLOS mapping," you need to rewrite it clearly or accept the entry as non-compliant.

4. Wrong Flyer ID

You must log the correct PDRA01 number or Operational Approval reference. If you've logged someone else's ID or left it blank, the CAA cannot verify the pilot was authorized for that flight. This is a critical failure.

5. No Signature or Attestation

Flight logs must be signed or digitally confirmed by the pilot who flew. Unsigned logs are treated as unverified and cannot be used to demonstrate compliance.

6. Retroactive Entries (Weeks Later)

While the CAA prefers same-day logging, retroactive entries damage credibility. If you log flights from two weeks ago, the CAA questions: Why the delay? Were you hiding something? Are you inventing flights? Log as soon as practical—same day is the standard.

7. Airspace & Altitude Data Missing

The CAA needs to verify you flew within your authorization zone. Don't just write "local area." Include the airspace class, specific locations, and maximum altitude if relevant to your operational limits.

Building Your Flight Log System

Option 1: Digital Platform (Recommended)
  • Automatic timestamping and digital signatures
  • Exportable to PDF in seconds for CAA requests
  • Cloud backup ensures logs are never lost
  • Automatic alerts for 2-year retention expiry
  • Example: MmowW logs every flight with pilot ID, aircraft serial, location, and remarks pre-structured
  • Cost: £5.29/drone/month

Option 2: CAA Template + Spreadsheet (Baseline)
  • Download CAP 2606A from the CAA website and fill it in
  • Or use a structured Excel file mirroring the template columns
  • Name each file with aircraft serial number and year (e.g., "DJI-12345-2026.xlsx")
  • Print and sign monthly summaries for backup
  • Archive completed files every 12 months
  • Cost: Free (but manual and audit-risky)

Option 3: Handwritten Logbook (Not Recommended)
  • Use a CAP 2606A paper logbook with carbon copies
  • Store backup copies in separate location
  • Must be scanned to PDF for digital CAA submission
  • High risk of loss, water damage, or illegibility
  • Difficult to search or verify entries quickly

> Poppo's Note: The CAA technically accepts all three formats, but digital wins on every measure: speed, accuracy, searchability, and disaster recovery. A single laptop failure with a paper logbook means lost compliance evidence and potential authorization suspension. It's not just compliance—it's business insurance.

The 100g Threshold Change (January 2026)

As of January 1, 2026, the CAA lowered the regulatory weight threshold from 250g to 100g. This means:

  • More drones now require registration and flight logging
  • If you operate 100-500g aircraft, you must maintain flight records
  • Your logbook must clearly document aircraft mass at the time of operation
  • Insurance requirements may have changed—verify your policy covers your aircraft weight

Update your flight logs to include aircraft mass. If you operate multiple aircraft, note which ones fall under the new threshold and ensure they're properly registered.

What Happens If You Fail a CAA Audit?

Failure to provide complete, accurate flight records can result in:

  • Operation Approval suspension (temporary)
  • Operation Approval revocation (permanent)
  • PDRA01 qualification withdrawal
  • Civil penalties up to £1,000 per violation
  • Inability to fly commercially pending remediation
  • Insurance claim denial if records don't support the incident narrative

The CAA has moved to a risk-based oversight model, meaning they don't conduct annual audits on a schedule—they can request records at any time based on regulatory signals (incident reports, complaints, or random sampling).

FAQ

Q: Does every single flight need a logbook entry?

A: Yes. Every commercial operation must be logged. Test flights, training flights, equipment testing, incident investigation flights—all recorded. Even if the flight is only 2 minutes, it gets an entry.

Q: Can I log flights in batches at the end of the week?

A: The CAA prefers same-day entries. If you must batch log, do it within 24 hours while details are fresh. Logging flights 2+ weeks later damages credibility in an audit.

Q: What if I hire another pilot? Do they need their own logbook?

A: Every remote pilot who operates a drone must maintain flight records. You can maintain one organization logbook with multiple pilot entries, as long as each flight clearly identifies who flew it.

Q: Are electronic signatures legally valid?

A: Yes. Time-stamped digital signatures, username entries, or biometric signing are all accepted by the CAA. Manual signatures on printed logs work too. The key is proof of who authorized each entry.

Q: What if I forget to log a flight?

A: Log it as soon as you remember with a note explaining the delay. Be honest: "Flight conducted 2026-03-15, logged 2026-03-22 due to administrative oversight." The CAA prefers late logging over no logging.

Q: How do I export my logbook for a CAA inspection request?

A: A digital system exports as PDF or CSV in seconds with all data intact. Spreadsheets require manual formatting and risk of errors. Handwritten logs need to be scanned. Always have an exportable version ready—CAA requests can come with 48-72 hours' notice.

Q: Do I need both a flight log AND a technical logbook?

Your Remote Pilot Flight Log is proof that you operate transparently and accountably. It demonstrates to the CAA, your insurance company, and any legal process that every operation was authorized, documented, and within your regulatory limits. Start today: set up a flight logging system you'll use consistently. Use the CAA template or a digital platform designed for compliance. Log every flight immediately after landing. Store records securely with redundant backup.

MmowW automates drone flight logs with CAA-aligned templates, automatic timestamps, digital signatures, and exportable records ready for audit. Reduce your compliance workload by 80%. Learn more at mmoww.net.