Narrative:

From the tower you can't see small aircraft on taxiway C at the north end or the approach end of runway 16L. The maule was told to hold short of runway 16L and there was experimental traffic 1/2 mi final. The maule did not hold short but departed without a clearance in front of the experimental. Because you can't see it, the problem is very difficult to catch.

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Original NASA ASRS Text

Title: PLTDEV ACFT X TKOF WITHOUT CLRNC WITH ACFT Y ON 1/2 MI FINAL.

Narrative: FROM THE TWR YOU CAN'T SEE SMALL ACFT ON TXWY C AT THE N END OR THE APCH END OF RWY 16L. THE MAULE WAS TOLD TO HOLD SHORT OF RWY 16L AND THERE WAS EXPERIMENTAL TFC 1/2 MI FINAL. THE MAULE DID NOT HOLD SHORT BUT DEPARTED WITHOUT A CLRNC IN FRONT OF THE EXPERIMENTAL. BECAUSE YOU CAN'T SEE IT, THE PROB IS VERY DIFFICULT TO CATCH.

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.