Narrative:

I got the ATIS which said the active runway was runway 24. The winds being light, I requested runway 32 to depart since our route was to the northeast. The controller said 'taxi to runway 32.' from the terminal ramp I taxied east. I had no airport diagram when I got near the intersection of runway 32 and the ramp. I saw a taxiway, west of runway 32, but it appeared to end at a row of hangars, so I continued across runway 32 to get the taxiway, east of runway 32, and taxied to hold short of runway 32 to do my run-up. As I crossed runway 32, I checked for traffic, there was none -- no conflict resulted. When I contacted tower to depart, he asked where I had taxied from and I informed I had crossed an active runway without clearance. This confusion resulted in a mistake. Runway 24 was the active runway. It would have helped if I had an airport diagram, the controller had issued a clearance to taxi via taxiway such and such. Assumed that 'taxi to runway 32' meant I was cleared to cross all runways and txwys to get there. I should have requested a progressive taxi. I will hold short of red runway signs to verify clearance before crossing. I was unaware of the taxiway, west of runway 32.

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Original NASA ASRS Text

Title: SMA PLT HAD A RWY INCURSION AT JXN.

Narrative: I GOT THE ATIS WHICH SAID THE ACTIVE RWY WAS RWY 24. THE WINDS BEING LIGHT, I REQUESTED RWY 32 TO DEPART SINCE OUR RTE WAS TO THE NE. THE CTLR SAID 'TAXI TO RWY 32.' FROM THE TERMINAL RAMP I TAXIED E. I HAD NO ARPT DIAGRAM WHEN I GOT NEAR THE INTXN OF RWY 32 AND THE RAMP. I SAW A TXWY, W OF RWY 32, BUT IT APPEARED TO END AT A ROW OF HANGARS, SO I CONTINUED ACROSS RWY 32 TO GET THE TXWY, E OF RWY 32, AND TAXIED TO HOLD SHORT OF RWY 32 TO DO MY RUN-UP. AS I CROSSED RWY 32, I CHKED FOR TFC, THERE WAS NONE -- NO CONFLICT RESULTED. WHEN I CONTACTED TWR TO DEPART, HE ASKED WHERE I HAD TAXIED FROM AND I INFORMED I HAD CROSSED AN ACTIVE RWY WITHOUT CLRNC. THIS CONFUSION RESULTED IN A MISTAKE. RWY 24 WAS THE ACTIVE RWY. IT WOULD HAVE HELPED IF I HAD AN ARPT DIAGRAM, THE CTLR HAD ISSUED A CLRNC TO TAXI VIA TXWY SUCH AND SUCH. ASSUMED THAT 'TAXI TO RWY 32' MEANT I WAS CLRED TO CROSS ALL RWYS AND TXWYS TO GET THERE. I SHOULD HAVE REQUESTED A PROGRESSIVE TAXI. I WILL HOLD SHORT OF RED RWY SIGNS TO VERIFY CLRNC BEFORE XING. I WAS UNAWARE OF THE TXWY, W OF RWY 32.

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.