You power up your aircraft to realize the gimbal lock is still in place...either you rush to power it off ( bad idea while the aircraft is booting) or you rush to remove the gimbal lock while the gimbal is forcing to calibrate ( even worst idea) And be honnest, we all did it at least once even with the nice red ribbon attached!
Here my simple failsafe gimbal lock reminder.
Here my simple failsafe gimbal lock reminder.