What was found
DURING A TAKEOFF ROLLOUT AT 110KTS, NR 3 ENGINE OIL PRESSURE LIGHT CAME ON. TAKEOFF WAS REJECTED. OIL PRESSURE AND QUANTITY INDICATED NORMAL BUT LIGHT REMAINED ON UNTIL THE ENGINE WAS SHUTDOWN. CREW RETURNED TO BLOCKS. MAINTENANCE DEFERRED THIS IAW MEL 79-6 (CAT B) WITH A NO FLY DATE OF 11/26/05. MAINTENANCE CHECKED NR 3 ENGINE OIL PRESSURE WARNING LIGHT SWITCH AND DIFFERENTIAL SWITCH AND ASSOCIATED WIRING, NO DEFECTS WERE NOTED. FOUND BULB IN LIGHT SOCKET LOOSE. REPLACED BULB AND RAN THE NR 3 ENGINE AND THE OIL PRESSURE LIGHT CHECKS NORMAL WITH NO DEFECTS NOTED IAW ALL APPLICABLE MANUALS.