The Hawk T1 is equipped with two inertia switches which will close automatically if a rapid deceleration is detected, i.e. a crash or very hard landing. This de-energises the No.1 and 2 batteries, disconnecting them from the essential services busbar. The engine-driven generator is also taken offline and the fire extinguish automatically discharges, in the attempt to avoid an aircraft fire.

This will be immediately apparent due to the failure of several of the primary instruments through lack of electrical power. To reset the aircraft, end the flight and start a new flight.