Narrative:

The first officer finished up the taxi and before takeoff checklist. We were on runway 30 at mtj, for approximately 3-4 mins while we discussed the IFR departure procedure. The WX was VFR, wind calm, temperature 32 degree, runway dry. After completing the approach briefing, the first officer said 'my brakes'. I then released the parking brake while he set takeoff power. Once power was set, he released the brakes and began the takeoff roll. I fine tuned the power, monitored the engine gauges, called 'both autofeathers are armed.' nothing seemed out of the ordinary for an small transport takeoff roll. I was then getting ready to make the 'airspeed alive' callout when I noticed our airspeed was not even off the peg yet. I asked him if something was wrong because the ground roll was unusually long. He said 'it feels sluggish'. I then turned on the brake heat and simultaneously told him to abort. The aircraft was almost on the centerline (it was just to the left) when he closed the throttles. As soon as the throttles were closed the aircraft veered sharply to the left. We both jumped on the brakes and the aircraft skidded off the runway. We were going so slowly that I thought for sure we would stop before going off the runway. As we skidded it felt as if we were on ice yet the runway was bone dry. After we came to a stop, I shut everything down while the first officer checked on the passengers safety. No one was injured or visibly upset so we offloaded the 5 passengers. After surveying the scene, we found that about 30' into our roll the right brake locked up and remained locked until pulling the plane out of the mud. There were skid marks from only the right mains from 30' into the ground roll until the edge of the runway. Both right main tires blew out. We had this same plane for 7 legs the day before and it ran fine. Why did it veer left when the right main was locked up?

Related reports:

Google
 

Original NASA ASRS Text

Title: COMMUTER SMT RWY EXCURSION ON TKOF.

Narrative: THE F/O FINISHED UP THE TAXI AND BEFORE TKOF CHKLIST. WE WERE ON RWY 30 AT MTJ, FOR APPROX 3-4 MINS WHILE WE DISCUSSED THE IFR DEP PROC. THE WX WAS VFR, WIND CALM, TEMP 32 DEG, RWY DRY. AFTER COMPLETING THE APCH BRIEFING, THE F/O SAID 'MY BRAKES'. I THEN RELEASED THE PARKING BRAKE WHILE HE SET TKOF PWR. ONCE PWR WAS SET, HE RELEASED THE BRAKES AND BEGAN THE TKOF ROLL. I FINE TUNED THE PWR, MONITORED THE ENG GAUGES, CALLED 'BOTH AUTOFEATHERS ARE ARMED.' NOTHING SEEMED OUT OF THE ORDINARY FOR AN SMT TKOF ROLL. I WAS THEN GETTING READY TO MAKE THE 'AIRSPD ALIVE' CALLOUT WHEN I NOTICED OUR AIRSPD WAS NOT EVEN OFF THE PEG YET. I ASKED HIM IF SOMETHING WAS WRONG BECAUSE THE GND ROLL WAS UNUSUALLY LONG. HE SAID 'IT FEELS SLUGGISH'. I THEN TURNED ON THE BRAKE HEAT AND SIMULTANEOUSLY TOLD HIM TO ABORT. THE ACFT WAS ALMOST ON THE CTRLINE (IT WAS JUST TO THE L) WHEN HE CLOSED THE THROTTLES. AS SOON AS THE THROTTLES WERE CLOSED THE ACFT VEERED SHARPLY TO THE L. WE BOTH JUMPED ON THE BRAKES AND THE ACFT SKIDDED OFF THE RWY. WE WERE GOING SO SLOWLY THAT I THOUGHT FOR SURE WE WOULD STOP BEFORE GOING OFF THE RWY. AS WE SKIDDED IT FELT AS IF WE WERE ON ICE YET THE RWY WAS BONE DRY. AFTER WE CAME TO A STOP, I SHUT EVERYTHING DOWN WHILE THE F/O CHKED ON THE PAXS SAFETY. NO ONE WAS INJURED OR VISIBLY UPSET SO WE OFFLOADED THE 5 PAXS. AFTER SURVEYING THE SCENE, WE FOUND THAT ABOUT 30' INTO OUR ROLL THE R BRAKE LOCKED UP AND REMAINED LOCKED UNTIL PULLING THE PLANE OUT OF THE MUD. THERE WERE SKID MARKS FROM ONLY THE R MAINS FROM 30' INTO THE GND ROLL UNTIL THE EDGE OF THE RWY. BOTH R MAIN TIRES BLEW OUT. WE HAD THIS SAME PLANE FOR 7 LEGS THE DAY BEFORE AND IT RAN FINE. WHY DID IT VEER L WHEN THE R MAIN WAS LOCKED UP?

Data retrieved from NASA's ASRS site as of July 2007 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.