Drone Flight Log Requirements UK: What CAA Expects in 2026

If you hold an Operational Authorisation (OA) from the CAA, you already know that flight logs are not optional. They are a legal requirement for every Specific Category operation, and the CAA inspects them during audits. But what exactly must you record? How long must you keep them? And what format does the CAA actually want? This guide explains every detail of the drone flight log UK requirements — so you can build a system that passes a CAA audit on day one.

What is a Drone Flight Log? Why the CAA Requires It

A flight log is the official record of every flight your organisation conducts. It serves two purposes:

1. Compliance Proof — It demonstrates to the CAA that you're conducting operations safely and within your authorisation limits
2. Incident Investigation — If an accident occurs, the flight log provides critical data about the conditions, pilot, and duration of that flight

The CAA holds all operators under UK Regulation (EU) 947/2019 and CAP 722 responsible for maintaining accurate, complete flight logs. During an audit, the CAA can request records for your last three flights at any time. If you cannot produce them, your OA can be suspended or revoked.

Legal Retention Period: 2 Years Minimum

You must retain flight log records for a minimum of 2 years from the date of the flight. This is not "until the next audit" — it's a hard legal requirement. Digital storage counts, and the CAA expects you to be able to export records in a standard format within a reasonable timeframe. > 🧑‍✈️ Captain James: "I've been flying drones commercially for five years. The first time a CAA inspector asked for my logs, I realised I'd only been keeping them in my email drafts folder. I switched to a spreadsheet that day — it was that close." > 🧑‍💻 Operator Sarah: "That's exactly why we standardised on digital logs. Now every pilot submits their log the day after they fly. No guesswork, no lost records."

What Must You Record in a Flight Log?

The CAA provides a PDRA01 Remote Pilot Logbook Template that sets the minimum standard. For each flight, you must record:

Essential Flight Information

• Pilot name and Flyer ID — Which qualified pilot conducted this flight
• Date of flight — The calendar date (YYYY-MM-DD recommended for clarity)
• Take-off and landing location — The site where the flight commenced and concluded (postcode or grid reference)
• Duration of flight — Total airtime in hours and minutes
• Daylight or night operation — Whether the flight occurred in daylight or darkness
• UAS serial number or registration number — The unique identifier of the aircraft used

Operational Description

• Description of the flight — What was the flight for? (e.g., "Surveying rooftops for solar installation, 8 flights, 2.5 hours total, no incidents")
• Remarks on any unusual technical or operational occurrences — Did anything go wrong? Loss of signal? Battery warning? Interference? Even "normal flight, no issues" counts

Example of a Well-Completed Flight Log Entry

`` Date: 10 April 2026 Pilot: John Smith (Flyer ID: UK123ABC456) Aircraft: DJI Air 3S (Serial: 2ASDH89HU2KNSD) Take-off: Wilmslow Aerodrome, Manchester (SJ847795) Landing: Same Duration: 47 minutes Daylight/Night: Daylight Operation Type: Photogrammetry survey for rooftop assessment Remarks: VLOS maintained throughout, 4 flights total, no equipment issues, weather clear ` This tells the CAA everything it needs to know: you had a qualified pilot, a registered aircraft, appropriate location, and documented what happened.

What You Must NOT Include (and Why It Matters)

Many operators mistakenly add subjective commentary that can create liability during an audit:

• "Easy flight" / "Routine" — Avoid casual language; use factual descriptions
• Commercial rates or client names — Flight logs are not invoices; keep them separate
• "No incidents" without specifics — If something went wrong, describe it clearly. If nothing went wrong, say "No technical or operational issues"
• Incomplete entries — A log entry without a landing time is incomplete and suggests rushed record-keeping

> 🦉 ポッポノート (Poppo's Compliance Tip) > > The CAA does not penalise you for incidents — it penalises you for not recording them. If you lose signal for 10 seconds, record it: "Brief signal loss, drone recovered to pilot control, landing nominal." This demonstrates you are monitoring operations actively and responding appropriately. A flight log that shows zero incidents ever? The CAA may suspect you are not recording honestly.

Digital vs. Paper: What Format Does the CAA Accept?

The CAA strongly prefers digital flight logs — specifically because they can be exported quickly and consistently during an audit.

Digital (Recommended)

Format Options:

• Spreadsheet (Excel, Google Sheets, LibreOffice)
• Specialist drone logbook software (Dronedesk, MmowW, etc.)
• Structured database with export capability

Why Digital Wins:

• Instant export to PDF or CSV for CAA submission
• Automatic data validation (missing fields flagged before submission)
• Searchable by date, pilot, or aircraft
• Backup-friendly (cloud storage, version history)
• Audit trail (who edited what, when)

Paper (Not Recommended)

Paper logbooks are legally acceptable but create friction during an audit:

• Harder to locate specific records quickly
• No automatic backup
• Requires manual transcription if the CAA requests a digital copy
• Handwriting legibility issues

If you do use paper, ensure entries are signed and dated by the pilot, and maintain a scanned backup in digital form.

The CAA's Expectation During Audit

When the CAA requests your flight logs, they typically specify a format:

"Please provide flight logs for flights conducted on 15-17 April 2026 in digital format (PDF or CSV) within 7 days."

If you have to manually retype paper logs into a spreadsheet to meet this deadline, you've already created inefficiency. Digital logs mean you hit submit within an hour.

How to Structure Your Flight Log System

Single-Operator Setup (1–3 Pilots)

A simple spreadsheet works fine:

Date	Pilot Name	Flyer ID	Aircraft Serial	Location	Duration	Day/Night	Description	Remarks
10-Apr-26	John Smith	UK123ABC	2ASDH89HU2KNSD	Wilmslow	0:47	Day	Rooftop survey	No issues
09-Apr-26	Sarah Jones	UK456DEF	2ASDH89HU2KNSD	Wilmslow	0:33	Day	Maintenance flight	Signal loss 8s, recovered

Spreadsheet Tips:

• Format dates consistently (DD-Mon-YY or YYYY-MM-DD)
• Use dropdown menus for Pilot, Aircraft, and Day/Night to reduce typos
• Total flight hours by pilot and aircraft using SUM formulas
• Colour-code rows by operation type (routine, training, test, incident)
• Back up monthly to cloud storage (Google Drive, OneDrive, Dropbox)

Multi-Operator Setup (4+ Pilots)

Use specialist software:

Dronedesk: £10–20/user/month, integrated flight planning and logging MmowW: £5.29/aircraft/month, automated record-keeping, instant CAA export

Digital platforms automatically enforce data completeness — a pilot cannot submit a log without filling required fields — which eliminates the most common audit failure: incomplete entries.

Template: CAA PDRA01 Remote Pilot Logbook

The CAA provides an official template on the PDRA01 Information page. Use it as a starting point, but adapt to your operational reality:

1. Download the template from caa.co.uk/drones/specific-category/pdra01-operational-authorisation/
2. Adapt column headers to match your workflow (add "Aircraft ID", "Flight Purpose", "Incident Type" if needed)
3. Train all pilots on entry standards before they conduct their first flight
4. Review entries weekly for completeness before filing

Common Flight Log Mistakes (And How to Avoid Them)

Mistake 1: Retroactive Entries

The Problem: A pilot flies on Monday but doesn't log it until Friday. The CAA sees a five-day gap and questions reliability. The Solution: Require pilots to submit flight logs within 24 hours of landing. Digital systems can enforce this via notifications.

Mistake 2: Vague Location Data

The Problem: "Flew in Manchester" — which landing site? The CAA cannot verify airspace compliance without specific coordinates. The Solution: Always record postcode (e.g., "M1 3AA") or grid reference (e.g., "SJ847795"). Consistent format across all entries.

Mistake 3: Incomplete Duration Records

The Problem: "10:30–11:15 flight time" without totalling the duration. Auditors must calculate it themselves. The Solution: Always include "Duration: 45 minutes" explicitly. If you conducted multiple flights at the same site, total them: "4 flights, 2.5 hours total".

Mistake 4: Ignoring Minor Incidents

The Problem: A pilot loses signal briefly, recovers, and thinks "no need to mention it". The CAA later finds undisclosed signal loss during airspace analysis. The Solution: Record everything — every signal loss, every battery warning, every unusual aircraft behaviour. This demonstrates active monitoring and builds credibility.

Mistake 5: Inconsistent Aircraft Serial Numbers

The Problem: "DJI Air 3" in one entry, "DJI-Air-3S" in another, "Serial 2ASDH89HU2KNSD" in a third. No clear audit trail. The Solution: Use a standardised format — define it before the first entry and enforce it in training. Example: "[Manufacturer] [Model] — Serial [Full Serial]"

> 🧑‍✈️ Captain James: "The second time a CAA inspector visited, I printed out our flight logs. Everything was consistent, searchable, and ready. The inspection took 20 minutes instead of three hours. That's what proper logging does."

Digital Flight Log Best Practices

1. Automation Over Manual Entry

If your software can auto-fill the date, pilot name, or aircraft based on pre-existing data, enable it. Fewer manual fields = fewer errors.

2. Monthly Export and Archive

Export flight logs to PDF every month. Store monthly archives separately from the working log. This protects against accidental data loss and provides a clear audit trail of when logs were finalised.

Example naming: Flight_Logs_April_2026_ARCHIVED.pdf`

3. Multi-Pilot Verification

If multiple pilots conduct flights, assign one person to review and approve logs before archiving. This person (typically the Operations Manager) checks for:

• Complete entries (no blank fields)
• Legible pilot names and Flyer IDs
• Realistic durations and locations
• Proper incident recording

4. Backup Strategy

• Daily: Automatic cloud backup (Google Drive, Dropbox, OneDrive, or MmowW cloud storage)
• Weekly: Exported PDF to a separate archive folder
• Monthly: Encrypted backup to external hard drive stored off-site

If a server failure or cyber incident occurs, you can restore logs from multiple points in time.

5. CAA Audit Readiness

Keep a master document summarising:

• Total flights in the past 2 years
• Total flight hours by pilot
• Aircraft in service and status
• Date range of current records

When the CAA requests logs, you can provide this summary immediately, plus the specific records requested within hours.

How MmowW Automates Flight Log Compliance

MmowW simplifies the entire flight log workflow:

✅ Automated Data Capture

Pilots enter flight data via a mobile form immediately after landing:

• Date, location, duration auto-populated from GPS
• Pilot Flyer ID validated against registered qualifications
• Aircraft serial number pre-filled from inventory database
• Incident flags trigger instant alerts

✅ CAA-Format Export

One click generates a PDF export in CAA PDRA01 format — ready to send to the CAA during audit with zero manual editing.

✅ 2-Year Retention

All logs automatically retained for 24+ months. Monthly archives created and secured.

✅ Audit Dashboard

See at a glance:

• Last flight logged (days ago)
• Missing entries (flagged for follow-up)
• Total hours by pilot (currency tracking)
• Incidents recorded (quality assurance)

✅ Incident Tracking

Logs with technical or operational incidents flagged separately, so auditors see your incident awareness is active.

FAQ: Drone Flight Log UK Requirements

Q: If I conduct 10 short flights in a single day, do I log them as 10 separate entries or one entry with multiple flights?

A: Log them as 10 separate entries — one per flight. Each entry should show take-off time, landing time, and duration. This provides granular detail for incident investigation and accident analysis. If they all occur at the same site, that is fine; the location field is the same across all 10 entries.

Q: I forgot to log a flight that occurred 5 days ago. Can I add it retroactively?

A: Yes, you can add retroactive entries — but you must note the date you created the entry separately. Many spreadsheets include a "Date Logged" column distinct from "Date of Flight". During audit, a cluster of retroactive entries may raise questions about record-keeping rigour. Aim for real-time logging whenever possible.

Q: What happens if my flight log is found to be incomplete during a CAA audit?

A: Incomplete flight logs can lead to:

• Immediate escalation to the CAA's Compliance and Investigation team
• OA suspension pending correction
• Fines up to £1,000
• In serious cases, revocation of your OA

The CAA views incomplete logs as evidence of insufficient operational control.

Q: Can I use pen and paper for flight logs if I digitise them weekly?

A: Technically yes, but this creates risk. Paper logs can be lost, damaged, or misinterpreted. If you use paper, maintain a contemporaneous digital copy (scanned the same day) and ensure all entries are signed and dated by the pilot. The CAA prefers native digital logs and may view paper logs with suspicion.

Q: How detailed should my "Remarks" section be? Is one sentence enough?

A: One sentence is the minimum. Examples of adequate remarks:

• "No technical or operational issues recorded"
• "Brief signal loss (~5 seconds), aircraft recovered to pilot control, landing nominal"
• "Moderate wind gusts (18–22 mph), aircraft stable, operation nominal"
• "Battery warning triggered at 18 minutes, landed safely with 4 min remaining"

Avoid "Normal flight" — this is too vague. Be specific so that someone reading your log six months later (or a CAA inspector) understands what actually happened.

Q: If I have a multi-day operation (e.g., surveying a field over three days), do I create one flight log entry or multiple?

A: Create one entry per flight. If you conduct three flights over three days at the same site for the same project, that is three separate log entries. The "Description" field can reference the project: "Field survey for Acme Ltd, Flight 2 of 3 — see logs 07-Apr, 08-Apr".

Q: Do I need to log test flights or training flights the same way as operational flights?

A: Yes. All flights must be logged — operational, training, test, and maintenance flights alike. You can use a "Flight Type" or "Flight Purpose" field to distinguish them, but every single flight gets an entry.

Ready to Simplify Your Compliance?

Managing flight logs manually is error-prone and time-consuming. MmowW automates the entire process — from data capture to CAA export — so you can focus on flying safely.

MmowW Flight Log Features:

• Digital logbook with instant export
• Automatic 2-year retention
• Incident flagging and alerts
• Pilot currency tracking
• One-click CAA audit export

From £5.29 per aircraft per month — less than a coffee a week.

Published by MmowW — World's Administrative Scrivener 🐮🦉 Based on UK CAA regulations (CAP 722, PDRA01 Guidance) current as of April 2026.