Drone won't take off

Overview

Motors spin but aircraft won't lift or flips.

DJI geo-fence, national UTM map, EU Remote ID, Betaflight arming flags.

Symptoms

Typical "Drone won't take off" signs in flight, app or OSD:

• Motors spin — no lift
• Immediate flip on takeoff
• Max altitude 0 m message
• App error list — every red line before arming.

Common causes

Before replacing parts, rule out software, mechanical and environmental causes:

• Props on wrong motors (CW/CCW)
• Geo-zone / no-fly — software lock
• IMU error
• Too heavy payload

Tools needed

Prepare before diagnostics — saves time in the field:

• National UTM map
• NAA operator ID
• DJI Fly geo unlock (if permitted)

Step-by-step fix

Work safely: battery off when working on ESC/motors; props removed; after repair — VLOS test flight.

• Check prop mapping diagram.
• App — check geo restriction; move location.
• IMU cal; weight check vs MTOW.
• FPV flip — motor direction in Betaflight.

Additional diagnostics

App error list — every red line before arming.

Compare DJI geo with official NAA map.

RID broadcast — third-party RID reader for test.

When to contact service

If any of the following apply — do not fly and contact authorised service:

• Official geo-zone prohibits flight — DJI unlock is not enough.
• Remote ID error for commercial flight.
• Aircraft flips after prop check — mechanical/service.

Prevention

Prevention reduces failure risk and supports EASA Open / VLOS compliance:

• Preflight prop check

Frequently asked questions

Is it safe to fly with "Drone won't take off"?

No if the fault affects navigation, power, ESC or link. Fix on the ground first, then conduct a VLOS test flight in open area.

How long does diagnosis take?

Most “Drone won't take off” cases — 15–45 min on the ground. Complex ones (firmware, hardware) may need 1–2 h and service.

Must I register repair with the NAA?

No mandatory repair registration, but a maintenance log is recommended for commercial operations.