Narrative:

I failed to understand a tower command and proceeded to taxi onto the active. As I looked left I saw landing traffic. I'm still not sure tower didn't say cleared for takeoff but they must have said hold short. I should have asked them to repeat.

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Original NASA ASRS Text

Title: GA SMA PLT UNAUTH TAXI. STARTED TO ENTER RWY THEN SAW TRAFFIC AND HELD POSITION.

Narrative: I FAILED TO UNDERSTAND A TWR COMMAND AND PROCEEDED TO TAXI ONTO THE ACTIVE. AS I LOOKED LEFT I SAW LNDG TFC. I'M STILL NOT SURE TWR DIDN'T SAY CLRED FOR TKOF BUT THEY MUST HAVE SAID HOLD SHORT. I SHOULD HAVE ASKED THEM TO REPEAT.

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.