Freewing 3900kv EDF inrunner death

Freewing F35 stock 3900kv motor suddenly stopped in air. Luckily the plane landed safely. The ESC did not smell and likely the motor is burnt. Infra-red temp. measured >110 deg Cel.

The motor was found seized and postmortum was undertaken. Opening the can and the wires coating was found melted and seized the magnet. Distal third of the magnet is partially demagnetized (where the heat sink does not go that far).

Lesson to learn: Let the motor cool down before another flight! Especailly if the inrunner is aging.