# Test MC_04 - Failsafe Testing

❏ Verify RC Loss action is Return to Land

❏ Verify Data Link Loss action is Return to Land and the timeout is 10 seconds

❏ Verify Battery failsafe

❏ Action is Return to Land

❏ Battery Warn Level is 25%

❏ Battery Failsafe Level is 20%

❏ Battery Emergency Level is 15%

❏ Take off in Altitude mode

❏ Move at least 20 meters away home position

❏ RC loss

❏Turn off RC and check the vehicle returns to home position, wait for the descent and turn on the RC and take over.

# Datalink Loss

❏ Disconnect telemetry, vehicle should return to home position after 10 seconds, wait for the descent and reconnect the telemetry radio

❏ Make sure roll, pitch and yaw sticks respond like in Stabilize mode

❏ Throttle should control altitude, and when the stick is centered it must maintain altitude

❏ When the sticks are centered, it must maintain position

❏ Move roll, pitch and yaw and check the vehicle is moving according to the inputs

❏ Center the sticks again and check the vehicle maintains position

❏ Confirm the warning message is received in QGC

❏ Confirm the vehicle returns to land

❏ Confirm the vehicle lands.