Dozy,
Don't forget about the A-340 testing incident at Airbus that hit the wall on November 15, 2007...
From the BEA Report:
Engine #3 and #4 kept running after impact and did not stop immediately. It was not possible to shut them down, neither by activating the fire extinguisher handles nor by positioning the thrust levers on OFF. Water and foam spray on engine #4 managed to extinguish it at 18:48.
Due to the proximity of the wall this was not was not possible with engine #3 in a similar manner to engine #4. It shut down by itself only on November 16 at 01:25 after it had consumed all the fuel from its collector tank.
Again the electrical connections from the engines to the cockpit were severed.
