Narrative:

Flight alb to syr was cleared into position and hold. I acknowledged the clearance to position and hold. As we lined up onto the runway the captain applied takeoff power beginning the takeoff roll. Before I could act, the tower yelled stop over the radio. I applied full braking and the captain removed power. We had rolled less than 500'. The tower then gave us takeoff clearance and we took off from that point. The captain said, 'I asked you if we were cleared for takeoff, and when you did not answer I thought that meant we were cleared to take off.' I also believe he was in a rush and 'heard' what he wanted to hear. Cockpit crew coordination does not work with 1 participant.

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Original NASA ASRS Text

Title: FLT CREW OF LTT COMMUTER STARTED TKOF WITHOUT CLRNC.

Narrative: FLT ALB TO SYR WAS CLRED INTO POS AND HOLD. I ACKNOWLEDGED THE CLRNC TO POS AND HOLD. AS WE LINED UP ONTO THE RWY THE CAPT APPLIED TKOF PWR BEGINNING THE TKOF ROLL. BEFORE I COULD ACT, THE TWR YELLED STOP OVER THE RADIO. I APPLIED FULL BRAKING AND THE CAPT REMOVED PWR. WE HAD ROLLED LESS THAN 500'. THE TWR THEN GAVE US TKOF CLRNC AND WE TOOK OFF FROM THAT POINT. THE CAPT SAID, 'I ASKED YOU IF WE WERE CLRED FOR TKOF, AND WHEN YOU DID NOT ANSWER I THOUGHT THAT MEANT WE WERE CLRED TO TAKE OFF.' I ALSO BELIEVE HE WAS IN A RUSH AND 'HEARD' WHAT HE WANTED TO HEAR. COCKPIT CREW COORD DOES NOT WORK WITH 1 PARTICIPANT.

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.