Narrative:

Holding for takeoff; I was advised I would be given departure ahead of incoming arrival. Then given; according to tower controller after the fact; 'line up and wait' which I misinterpreted or misheard as a takeoff clearance. I proceeded to take off.

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Original NASA ASRS Text

Title: A C-210 took off with an air carrier aircraft still on the runway. Pilot reported confusion over whether a takeoff or a LUAW clearance had been given.

Narrative: Holding for takeoff; I was advised I would be given departure ahead of incoming arrival. Then given; according to tower controller after the fact; 'line up and wait' which I misinterpreted or misheard as a takeoff clearance. I proceeded to take off.

Data retrieved from NASA's ASRS site as of April 2012 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.