Narrative:

Was cleared to taxi to runway 21 from executive beechcraft. I fly to this airport at least once a week and normally the instructions are to cross runway 21, make a right turn and hold short of the runway on the north side. On this occasion I was only told to taxi to runway 21. I crossed runway 21, held short on the north side and contacted the tower. I was then cleared to take off. After I was airborne, tower informed me that for future reference, not to cross runway 21 to north side unless cleared to do so. No conflicts resulted. This was caused by my inattn. Most of the time the active is runway 19 and we taxi across runway 21 to reach it.

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Original NASA ASRS Text

Title: A PA31 PLT, TAXIING FOR TKOF AT MKC, TAXIED ACROSS HIS ASSIGNED DEP RWY WITHOUT A CLRNC.

Narrative: WAS CLRED TO TAXI TO RWY 21 FROM EXECUTIVE BEECHCRAFT. I FLY TO THIS ARPT AT LEAST ONCE A WK AND NORMALLY THE INSTRUCTIONS ARE TO CROSS RWY 21, MAKE A R TURN AND HOLD SHORT OF THE RWY ON THE N SIDE. ON THIS OCCASION I WAS ONLY TOLD TO TAXI TO RWY 21. I CROSSED RWY 21, HELD SHORT ON THE N SIDE AND CONTACTED THE TWR. I WAS THEN CLRED TO TAKE OFF. AFTER I WAS AIRBORNE, TWR INFORMED ME THAT FOR FUTURE REF, NOT TO CROSS RWY 21 TO N SIDE UNLESS CLRED TO DO SO. NO CONFLICTS RESULTED. THIS WAS CAUSED BY MY INATTN. MOST OF THE TIME THE ACTIVE IS RWY 19 AND WE TAXI ACROSS RWY 21 TO REACH IT.

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.