Narrative:

We were cleared by ATC to taxi into position and hold. We misunderstood the clearance and proceeded with the takeoff roll. ATC then told us to stop and abort, we were not cleared for takeoff. We then aborted with no further incident. The reason I misunderstood is because we were an intersection departure with another airplane lined up behind us.

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Original NASA ASRS Text

Title: SMT COMMUTER CLRED POS AND HOLD BEGINS TKOF ROLL. TKOF ABORTED.

Narrative: WE WERE CLRED BY ATC TO TAXI INTO POS AND HOLD. WE MISUNDERSTOOD THE CLRNC AND PROCEEDED WITH THE TKOF ROLL. ATC THEN TOLD US TO STOP AND ABORT, WE WERE NOT CLRED FOR TKOF. WE THEN ABORTED WITH NO FURTHER INCIDENT. THE REASON I MISUNDERSTOOD IS BECAUSE WE WERE AN INTXN DEP WITH ANOTHER AIRPLANE LINED UP BEHIND US.

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.