Narrative:

I was working local 1. I cleared [the aircraft] for takeoff. It was dark out. [The aircraft] took off of a taxiway. I coordinated with ground control and told the tower supervisor that the aircraft was taking off of a taxiway. We all decided the safest thing to do was to allow the aircraft to continue. I think it is was just a pilot deviation. Everyone makes mistakes. It was dark and that affected the pilot and I from noticing it sooner.

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Original NASA ASRS Text

Title: A Tower Local Controller and Supervisor reported an aircraft took off from a taxiway instead of a runway.

Narrative: I was working local 1. I cleared [the aircraft] for takeoff. It was dark out. [The aircraft] took off of a taxiway. I coordinated with ground control and told the tower supervisor that the aircraft was taking off of a taxiway. We all decided the safest thing to do was to allow the aircraft to continue. I think it is was just a pilot deviation. Everyone makes mistakes. It was dark and that affected the pilot and I from noticing it sooner.

Data retrieved from NASA's ASRS site 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.