What was found
AIR TURBINE STARTER SEVERE OVERHEAT RH ENGINE CAUSED FLIGHT CREW TO RECEIVE A RH ENGINE FIRE INDICATION DURING TAKEOFF. TAKEOFF WAS ABORTED AT 100 KTS. AIRCRAFT TAXIED BACK TO RAMP AIRPORT FIRE RESCUE DID RESPOND AND DETERMINE THERE WAS NO FIRE BUT AIR TURBINE STARTER OVERHEAT HAD CAUSED INTERNAL OIL TO SMOKE AND SOOT THE AIR TURBINE STARTER AND HEAVILY DAMAGE THE ENGINE FAN CASE. FURTHER INVESTIGATION INDICATES AIR TURBINE STARTER HAD BEARING AND DRIVE CLUTCH FAILURE WHICH CAUSED THE AIR TURBINE STARTER TO OVERHEAT.