What was found
DURING TAKEOFF ROLL, THE NR 1 ENGINE LOW OIL PRESSURE LIGHT CAME ON AT 80 KNOTS. ABORTED TAKEOFF AND RETURNED TO RAMP WITH NO FURTHER INCIDENT. DMI THE NR 1 ENGINE LOW OIL PRESSURE LIGHT UNDER MEL 79-4. AIRCRAFT RETURNED TO SERVICE. CLEARED MEL 79-4 ON 7/8/2004 UPON ARRIVING IN KFLL BY REPLACING THE LOW OIL PRESSURE LIGHT SWITCH IAW B727 MM 79-33-0. OPERATIONAL SYSTEM CHECKED GOOD IAW B727 MM 79-32-0 AND THE AIRCRAFT RETURNED TO SERVICE.