Sample questions

Operational procedures

A free preview of real exam-style questions for this topic — each with the correct answer, an explanation, and the official source it is based on.

1. 01What must be verified for the batteries before every flight?

   • ✓Charge level, physical condition (not swollen), temperature. — Correct answer
   • ·Charge level only.
   • ·Serial number only.
   • ·Only that the battery is connected.

   Li-Po batteries are the critical element of an Open-category drone. A swollen battery can ignite; one that is too cold or too hot will not deliver predictable power.

   EASA Easy Access Rules — Operational procedures↗; manufacturer manuals↗

2. 02What is the pilot's first action when the control link is lost?

   • ·Run beneath the drone and try to catch it.
   • ✓Rely on the UAS's pre-set fail-safe (RTH or controlled descent). — Correct answer
   • ·Disconnect the battery in the remote controller.
   • ·Restart the mobile app to restore the link.

   On lost link the UAS executes its pre-set fail-safe — RTH or controlled descent. The pilot validates these settings before flight.

   EASA Easy Access Rules — Emergency procedures↗

3. 03What is the maximum Follow-Me distance from the pilot in A1?

   • ·500 m.
   • ·120 m.
   • ✓50 m. — Correct answer
   • ·250 m.

   In Open A1 the Follow-Me distance is capped at 50 m from the remote pilot.

   Reg (EU) 2019/947 UAS.OPEN.020(1)(a) — follow-me mode↗

4. 04How to store a Li-Po battery if it will not be used for the next 2 weeks?

   • ·Charged to 80–90 % — a universal level for any storage period.
   • ·Fully charged to 100 %.
   • ·Fully discharged to 0 %.
   • ✓Charged to 50–60 % (storage charge). — Correct answer

   Li-Po cells degrade if held for long periods outside the 3.7–3.85 V/cell range. Storage charge (50–60 %) maximises shelf life.

   Manufacturer guidance (DJI / Autel)↗; IEEE 1725 battery guidelines

5. 05What is the first action when a "low battery" warning appears in flight?

   • ✓Abort the mission and land at a safe spot. — Correct answer
   • ·Continue the mission — the drone will land itself.
   • ·Switch to FPV to reach the target faster.
   • ·Reduce flight altitude to save energy.

   "Low battery" means the pilot is losing manoeuvre reserves; the mission must be aborted and the drone landed safely or returned via RTH.

   EASA Easy Access Rules — Emergency procedures↗

6. 06A pilot plans a flight over an orchard with 8 m trees. The return route crosses power lines at 15 m height. What is the minimum RTH altitude that must be set?

   • ·8 m — the tallest trees on the route.
   • ✓15 m — the tallest obstacle on the return path. — Correct answer
   • ·50 m — a standard safe RTH altitude.
   • ·Altitude does not matter if GPS is working.

   RTH altitude must be set above the tallest obstacle along the entire return path. The tallest obstacle on this route is the power lines at 15 m — therefore RTH altitude must be above 15 m. In practice a safety margin (e.g. 20–25 m) is recommended to allow for position errors.

   EASA Easy Access Rules — Emergency procedures↗; pre-flight checklist