Narrative:

During the takeoff roll at approximately 95 KTS we noted a #2 engine thrust reverser unlock light and immediately executed the abort procedure. 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 speed by the middle of the runway having not used maximum braking below 80 KTS and rolled to the end and exited onto taxiway M and rolled to a stop; brakes held; not set. I communicated with the flight attendants and passenger and my first officer handled ATC communications. We then ran the rejected takeoff and thrust reverser unlock light checklist. The brake energy was 14.5 ft pounds 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 speed to arrive at our brake cooling times. At this point we used the 2 engine shutdown checklist and shut down both engines and started trying to talk to operations. We initially had difficulty and I (captain) used my cell phone to contact dispatch and maintenance control to start coordinating contract maintenance to meet us. It took approximately 35 mins for the tug to get to the aircraft and we towed the aircraft to the gate. A logbook entry was made and contract maintenance arrived a little time after. The mechanic was having trouble securing the #2 thrust reverser per the MEL. After about 1 hour 45 mins we were informed we were going to switch to another aircraft. We secured aircraft and left for the other aircraft.

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Original NASA ASRS Text

Title: 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.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.