Narrative:

I was cleared to taxi to runway 17 at G1 and hold short. Then tower requested me to taxi to runway 12R. I requested directions to runway 12R and was told to make a 'hard left.' the only 'hard left' was onto runway 17 and across it to runway 12R. This was done and resulted in tower canceling takeoff clearance given to the B737. The boeing was not yet on the roll. I was unclr whether tower wanted a 'hard left' back to the taxiway G or to proceed as I did. I should have asked for more specific instructions.

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Original NASA ASRS Text

Title: PLT FOLLOWS CONFUSING INSTRUCTIONS ENDING UP ON AN ACTIVE RWY AT HOUSTON.

Narrative: I WAS CLRED TO TAXI TO RWY 17 AT G1 AND HOLD SHORT. THEN TWR REQUESTED ME TO TAXI TO RWY 12R. I REQUESTED DIRECTIONS TO RWY 12R AND WAS TOLD TO MAKE A 'HARD L.' THE ONLY 'HARD L' WAS ONTO RWY 17 AND ACROSS IT TO RWY 12R. THIS WAS DONE AND RESULTED IN TWR CANCELING TKOF CLRNC GIVEN TO THE B737. THE BOEING WAS NOT YET ON THE ROLL. I WAS UNCLR WHETHER TWR WANTED A 'HARD L' BACK TO THE TXWY G OR TO PROCEED AS I DID. I SHOULD HAVE ASKED FOR MORE SPECIFIC 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.