Narrative:

While training a student in the pattern at F45; a cessna 172 taxied across our runway while we were executing a touch and go. I noticed the aircraft as the student was setting takeoff power at approximately 35 KTS. I yelled stop over CTAF with no response. I didn't have time to be more specific. The C-172 was taxiing west along taxiway K paralleling runway 8R/26L and we had heard no prior radio call. I was executing a touch and go on runway 13. Winds were reported at 120/7 on AWOS. I was the only other airplane operating in the pattern at the time. A helicopter was also doing air work in the area; two other airplanes had recently landed on runway 13. My student had made all of the appropriate radio calls; including a final call about one mile final. I did de-brief that the landing light was not on for the landing. At the time the aircraft crossed in front we were at a speed that a continued takeoff would have used less runway than an abort. The aircraft were not at risk of a collision as the crossing aircraft was moving at about 10-15 KTS and was about 1;500 ft down the runway. We rotated prior to taxiway J. I believe the C-172 was taxiing to runway 8R; but then later on taxied to runway 13 as multiple airplanes were arriving into the pattern for runway 13.I believe that F45 is in need of a tower. It is one of the busiest uncontrolled airports in florida. The runway layout and weight restrictions they have make it so airplanes are required to use intersecting runways regardless of the wind. There are frequent near-misses and various aircraft using non-standard traffic patterns. This all added in with the high volume of training is making F45 a very dangerous place.

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Original NASA ASRS Text

Title: A flight instructor training a student on touch and go landings on Runway 13 at F45 was alarmed when a C-172 crossed their runway westbound on Taxiway K as the student was applying takeoff power. The reporter cited this event as common at the non-towered airport and a demonstration of the need for an Air Traffic Control Tower to be opened.

Narrative: While training a student in the pattern at F45; a Cessna 172 taxied across our runway while we were executing a touch and go. I noticed the aircraft as the student was setting takeoff power at approximately 35 KTS. I yelled stop over CTAF with no response. I didn't have time to be more specific. The C-172 was taxiing west along Taxiway K paralleling Runway 8R/26L and we had heard no prior radio call. I was executing a touch and go on Runway 13. Winds were reported at 120/7 on AWOS. I was the only other airplane operating in the pattern at the time. A helicopter was also doing air work in the area; two other airplanes had recently landed on Runway 13. My student had made all of the appropriate radio calls; including a final call about one mile final. I did de-brief that the landing light was not on for the landing. At the time the aircraft crossed in front we were at a speed that a continued takeoff would have used less runway than an abort. The aircraft were not at risk of a collision as the crossing aircraft was moving at about 10-15 KTS and was about 1;500 FT down the runway. We rotated prior to Taxiway J. I believe the C-172 was taxiing to Runway 8R; but then later on taxied to Runway 13 as multiple airplanes were arriving into the pattern for Runway 13.I believe that F45 is in need of a Tower. It is one of the busiest uncontrolled airports in Florida. The runway layout and weight restrictions they have make it so airplanes are required to use intersecting runways regardless of the wind. There are frequent near-misses and various aircraft using non-standard traffic patterns. This all added in with the high volume of training is making F45 a very dangerous place.

Data retrieved from NASA's ASRS site as of July 2013 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.