B737-300 FLT CREW REJECTS TKOF DUE TO THRUST REVERSER UNLOCK LIGHT ILLUMINATING PRIOR TO V1.

Narrative

DURING THE TKOF ROLL AT APPROX 95 KTS WE NOTED A #2 ENG THRUST REVERSER UNLOCK LIGHT AND IMMEDIATELY EXECUTED THE ABORT PROC. DURING THE BRAKE APPLICATION; THE THRUST REVERSER UNLOCK LIGHT WENT OUT AND BOTH REVERSERS DEPLOYED AT WHICH TIME WE WERE DECELERATING THROUGH 80-85 KTS. WE WERE AT TAXI SPD BY THE MIDDLE OF THE RWY HAVING NOT USED MAX BRAKING BELOW 80 KTS AND ROLLED TO THE END AND EXITED ONTO TXWY M AND ROLLED TO A STOP; BRAKES HELD; NOT SET. I COMMUNICATED WITH THE FLT ATTENDANTS AND PAX AND MY FO HANDLED ATC COMS. WE THEN RAN THE REJECTED TKOF AND THRUST REVERSER UNLOCK LIGHT CHKLIST. THE BRAKE ENERGY WAS 14.5 FT LBS NOT REQUIRING A LOGBOOK WRITE-UP BUT THE 45 MIN BRAKE COOLING REQUIREMENT WAS ENTERED AND COMPLIED WITH. WE USED 105 KTS AS OUR ABORT SPD TO ARRIVE AT OUR BRAKE COOLING TIMES. AT THIS POINT WE USED THE 2 ENG SHUTDOWN CHKLIST AND SHUT DOWN BOTH ENGS AND STARTED TRYING TO TALK TO OPS. WE INITIALLY HAD DIFFICULTY AND I (CAPT) USED MY CELL PHONE TO CONTACT DISPATCH AND MAINT CTL TO START COORDINATING CONTRACT MAINT TO MEET US. IT TOOK APPROX 35 MINS FOR THE TUG TO GET TO THE ACFT AND WE TOWED THE ACFT TO THE GATE. A LOGBOOK ENTRY WAS MADE AND CONTRACT MAINT ARRIVED A LITTLE TIME AFTER. THE MECH WAS HAVING TROUBLE SECURING THE #2 THRUST REVERSER PER THE MEL. AFTER ABOUT 1 HR 45 MINS WE WERE INFORMED WE WERE GOING TO SWITCH TO ANOTHER ACFT. WE SECURED ACFT AND LEFT FOR THE OTHER ACFT.