You bring your FPV drone in for a smooth landing, but the moment the skids touch the ground, the drone violently bounces back into the air, stutters, or flips itself over. This incredibly annoying behavior is a direct result of Betaflight Airmode trying to do its job on the ground.
What is Airmode and Why Does it Cause Bouncing?
Airmode is a feature in Betaflight that keeps the PID loop active even when your throttle is at absolute zero. This is what allows you to do smooth, locked-in freestyle tricks (like inverted hangs) without the drone tumbling out of the sky. However, when you touch the ground, the drone’s sensors feel the impact. Airmode interprets this impact as an uncommanded movement and instantly spins up the motors to “correct” it, causing the drone to bounce or freak out.
| Landing Behavior | Probable Cause | How to Fix It |
|---|---|---|
| Drone bounces back into the air upon touching down | Airmode is permanently enabled, and you are landing with the drone armed. | Disarm the drone an inch above the ground, or put Airmode on a switch. |
| Drone stutters and flips over when landing | PID loop windup. The FC is overcompensating for the physical resistance of the ground. | Ensure you disarm immediately. Do not try to throttle down to a slow idle on the ground. |
| Motors scream when testing on the workbench without props | Airmode is active and trying to correct tiny vibrations, but without props, it has no effect, so it ramps up to 100%. | Normal behavior. Do not test Airmode on the bench without props for prolonged periods. |
Step-by-Step Fixes for Smooth Landings
- Step 1: The “Disarm Drop” Technique. The easiest and most common way professional FPV pilots land is simply flying a few inches above the grass and flipping the Disarm switch. Let the drone drop the final inch. This instantly cuts the PID loop and prevents any bouncing.
- Step 2: Put Airmode on a Switch. If you prefer to fly all the way to the ground smoothly, you need to turn Airmode off before landing. Go to the Betaflight Configuration tab and turn OFF the “Permanently enable Airmode” toggle. Then, go to the Modes tab and assign Airmode to a switch on your radio. Turn it on for flight, and turn it off for landing.
- Step 3: Motor Idle Speed. Sometimes bouncing is exacerbated by a motor idle speed that is set too high. In the Betaflight Motors tab, ensure your Motor Idle (%/Static) is set appropriately (usually between 4% and 5.5% for modern DSHOT ESCs).
- Step 4: Landing Pads and Skids. Hard carbon fiber hitting concrete will always cause a sharp vibration spike. Add soft TPU landing skids or foam pads to the bottom of your arms to absorb the initial touchdown shock, giving you a wider margin of error before Airmode freaks out.
Visual Guide to Airmode and Landing
Upgrade Your Landing Gear
Constantly bouncing on concrete will eventually scratch your motor bells, break your carbon fiber bottom plate, or snap your battery straps. Protect your investment. UAVMODEL offers custom-designed TPU landing skids, durable kevlar battery straps, and premium freestyle frames built to handle the roughest landings without breaking a sweat.