Maybe you are referring to the Vulcan that burnt at Scampton on the end of the runway in about 1974. Drung the run-up for take-off it hadn't even moved when one of the turbine discs detached and chain-sawed its way through the aircraft. Everyone got out OK. I was shown round a Vulcan a year or so later by the co-pilot Dick Fenn. A couple of notable features:
There was an air cadet on board and, when the crew evacuated he forgot to undo his 'elephant's trunk' and so his parachute opened automatically as he left the aircraft - it didn't seem to slow him down much though.
The turbine disc whizzed across the airfield and went straight through the back of an RAF Police Landrover, killing the unfortunate dog. The dog handler should have been in the back with his hound but was taking a ciggy break in the front with the driver. He was subsequently charged with being absent from his post of duty but was let off due to 'exterminating circumstances'.
There's a good photo of the wreckage in a Vulcan book I have but it's packed away in a box in the loft somewhere.