Question id 127 - Flight performance and planning - EASA Drone Quiz A2

Bending the propellers as hard as possible to test flexibility
Spinning the motors by hand while unpowered to check for grit, resistance, or damaged bearings
Washing the drone's flight controller with soap and water
Short-circuiting the battery to ensure the failsafe works

Training tests and timed exam simulations EASA Drone Quiz A2