A DJI altitude warning means the drone has hit a height limit. "Max flight altitude reached" means you're at the ceiling set in DJI Fly, or at a limit the drone applies on its own: 30 m (98 ft) when you're not logged into the app or the GPS signal was weak at power-on, or the cap inside a gray altitude zone on the map. Log in, wait for a strong GPS lock before takeoff, and check your Max Altitude setting.
"Max flight altitude reached"
DJI's manuals explain that the drone can't climb past the Max Altitude you set in Settings > Safety > Flight Protection. You keep full control; it just won't go higher. In the US, the legal limit is 400 ft above ground level, so setting Max Altitude to 120 m (about 394 ft) is a good habit. Remember that DJI Fly measures from the takeoff point, not the ground below the drone. See how high can a drone fly.
Stuck at 30 m (98 ft)
There are two common reasons:
- Not logged in or not connected to the app. DJI's manuals for the Air 3, Air 3S, Flip, Avata 2 and Mavic 3 Classic all say flight is restricted to 30 m height and 50 m range when the drone isn't connected or logged into the app. This applies to DJI Fly and other compatible apps. Log in to your DJI account. See account not logged in.
- Weak GPS at power-on. With weak satellite signal, DJI's Air 3 manual says altitude is limited to 30 m from takeoff in good light, or 3 m above the ground in low light if the infrared sensor is working. The limit lifts if the drone had a strong signal (strength 2 or more) when powered on. Power on in open sky and wait for the Home Point to record. See drone no GPS signal.
Altitude zones (gray areas on the map)
Altitude zones are DJI GEO zones with a height cap, shown in gray in DJI Fly. You get a warning as you approach, and the drone won't climb above the cap inside. They're often near airports. DJI's limit is separate from FAA rules: you still need LAANC or other authorization in controlled airspace. See how to unlock DJI GEO zones and LAANC explained.
"High altitude" warnings above sea level
Each DJI drone has a maximum takeoff altitude above sea level (the Air 3's is 6,000 m, for example). Near that limit, thin air reduces lift and battery performance. DJI Fly may warn you to fly carefully. Expect shorter flights and slower climbs in the mountains.
Manned aircraft warning
On drones with AirSense, such as the Air 3, DJI Fly shows an alert when it detects a manned aircraft broadcasting ADS-B nearby. Treat it seriously: descend, move away, and land if needed. Under FAA rules, drones must yield to manned aircraft. AirSense only sees aircraft that broadcast ADS-B, so keep watching and listening.
Other aircraft warnings
- Strong wind and low battery warnings can also force a descent or RTH. See DJI strong wind warning.
- If you're in a TFR or near a wildfire, don't fly at all. Check B4UFLY or Aloft before every flight.
Rules current as of October 2026. This is general information, not legal advice.
Want a drone that's easy to keep legal? The sub-250 g DJI Mini 5 Pro with its standard battery doesn't need FAA registration for recreational flying, but the 400 ft limit still applies.
Related guides
- How high can the DJI Mini 5 Pro fly? Altitude limit explained
- How high can the DJI Air 3 fly? Altitude limit explained
- How high can the DJI Air 3S fly? Altitude limit explained
- How high can the DJI Avata 2 fly? Altitude limit and unlock
- How high can the DJI Flip fly? Altitude limit explained
- How high can the DJI Mavic 3 Classic fly? Altitude limit explained
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