How is the knowledge hub different from exam prep?

The hub covers regulations, maps, manufacturer guides and calculators. Exam practice lives in the learning area with the question bank and simulator.

Where is the FPV build configurator?

Open Guides → FPV & custom, or scroll to the supplementary FPV tools block at the bottom of Tools. Use the learning area for exam practice.

Are DJI, FPV and enterprise drones covered separately?

Yes. Pick a guide segment — consumer drones, FPV and custom builds, commercial platforms or software — so content does not mix.

Do guides follow EASA rules?

Articles are aligned with EASA Part-UAS and national authority practice, with review dates and links to official sources on pillar hubs.

Where should I start if I do not know which licence I need?

Start with the eligibility test or the licence guide — both are linked from the Start here section.

Are the drone calculators free?

Yes. Registration check, flight time, wind (METAR) and payload vs MTOW calculators are free on the knowledge hub.

What is the payload calculator for?

It checks empty aircraft weight plus payload against maximum take-off mass (MTOW) — useful before adding cameras or cargo.

How accurate is the flight time calculator?

It gives an indicative hover/cruise time from battery mAh and average current. Wind, temperature and payload change real endurance.

Where does wind data come from?

You can enter wind manually or load METAR from a nearby aerodrome (e.g. EYVI, EYKA). Local conditions may differ from the airfield.

Search the whole knowledge hub — guides, tools, calculators.

Exam preparation

Knowledge hub for exams

EASA licence paths, airspace and regulations — core exam content. FPV and technical guides live in separate sections.

Exam prep · 337+ regulation guides · EASA sources

Guides Tools Calculators FAQ

Pre-flight

Flight calculators

Registration, battery flight time, wind (METAR) and payload vs MTOW — quick estimates before you fly.

Do I need to register my drone?

Enter take-off weight and camera — based on EASA Open category rules.

Take-off weight (g)

EASA class (optional)

Has camera or audio recording equipment

Yes — register the UAS with your NAA (249 g, camera/audio sensor).

Registration: Required
Certificate: A1/A3

Operator and UAS registration with your NAA is required.
A1/A3 remote pilot certificate covers most hobby Open category flights.
Check geo-zones in your national UTM map before every flight.

Prepare for exam Find your NAA

Flight time calculator

Enter battery capacity (mAh) and average current (A) for an approximate hover/cruise time.

Capacity (mAh)

Average current (A)

Mission duration (min.) — optional

Result

Estimated flight time: 16 min (80% pack capacity, 15 A average draw).

Indicative only. Wind, payload and temperature change real endurance.

Wind safety calculator (METAR)

Enter wind manually or load METAR from a nearby aerodrome (m/s).

METAR station (ICAO)

Current wind (m/s)

Gusts (m/s) — optional

Drone max wind (m/s)

OK to fly

Conditions look OK — 5 m/s ≤ 8.4 m/s safe limit.

Drone rating: up to 12 m/s wind.
Recommended limit (70%): 8.4 m/s.
Above the limit — postpone the flight or reduce altitude and distance.

METAR is aerodrome-level; local conditions may differ.

Payload (MTOW) calculator

Empty aircraft weight plus payload vs. maximum take-off mass (MTOW).

Empty weight (g)

MTOW (g)

Payload (g)

Within limits

Payload 200 g is within limits — total 1100 g ≤ 1200 g MTOW.

Max payload: 300 g

Calculator FAQ

Are the drone calculators free?: Yes. Registration check, flight time, wind (METAR) and payload vs MTOW calculators are free on the knowledge hub.
What is the payload calculator for?: It checks empty aircraft weight plus payload against maximum take-off mass (MTOW) — useful before adding cameras or cargo.
How accurate is the flight time calculator?: It gives an indicative hover/cruise time from battery mAh and average current. Wind, temperature and payload change real endurance.
Where does wind data come from?: You can enter wind manually or load METAR from a nearby aerodrome (e.g. EYVI, EYKA). Local conditions may differ from the airfield.