Narrative:

On the listed date and time another pilot and I were practicing instrument approachs into flint airport (fnt). We landed to switch pilot's near the approach end of runway 18. After restarting the aircraft, I contacted tower and advised him that I was ready for takeoff. What I now believe the tower advised me was to 'taxi to runway 18,' at the time I thought I was given a 'taxi to position.' when I was nearing the hold short line, I was unsure of the tower's last transmission and checked with my fellow pilot who also believed I was given a 'taxi to position.' I rolled out onto the runway and was immediately advised to exit same. To prevent this from ever reoccurring is simple. If there is any doubt about an instruction I will request clarification from ATC. It is not anyone else's responsibility in the aircraft, but the PIC's to be sure of all instructions.

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Original NASA ASRS Text

Title: PIPER PA28 PLT MISTAKENLY TAXIED INTO POS ON THE RWY WHEN TWR CTLR MEANT TO TAXI TO THE RWY AND HOLD SHORT.

Narrative: ON THE LISTED DATE AND TIME ANOTHER PLT AND I WERE PRACTICING INSTRUMENT APCHS INTO FLINT ARPT (FNT). WE LANDED TO SWITCH PLT'S NEAR THE APCH END OF RWY 18. AFTER RESTARTING THE ACFT, I CONTACTED TWR AND ADVISED HIM THAT I WAS READY FOR TKOF. WHAT I NOW BELIEVE THE TWR ADVISED ME WAS TO 'TAXI TO RWY 18,' AT THE TIME I THOUGHT I WAS GIVEN A 'TAXI TO POS.' WHEN I WAS NEARING THE HOLD SHORT LINE, I WAS UNSURE OF THE TWR'S LAST TRANSMISSION AND CHECKED WITH MY FELLOW PLT WHO ALSO BELIEVED I WAS GIVEN A 'TAXI TO POS.' I ROLLED OUT ONTO THE RWY AND WAS IMMEDIATELY ADVISED TO EXIT SAME. TO PREVENT THIS FROM EVER REOCCURRING IS SIMPLE. IF THERE IS ANY DOUBT ABOUT AN INSTRUCTION I WILL REQUEST CLARIFICATION FROM ATC. IT IS NOT ANYONE ELSE'S RESPONSIBILITY IN THE ACFT, BUT THE PIC'S TO BE SURE OF ALL INSTRUCTIONS.

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.