Narrative:

I am a flight instructor for a university in fl. My student and I were parked on the flight school ramp waiting to call ground control for clearance to taxi. My student contacted ground control and was told to taxi to runway 5, one of our two runways at boca airport. The student repeated the clearance back to the controller and we taxied to the run-up area for runway 5. While taxiing, I noticed the same controller who issued the taxi clearance to us was also operation the tower frequency, a common practice at the boca raton airport. I also noticed that this controller is the same on that does not use the phonetic alphabet when referring to our aircraft or others in the area. Following run-up, my student remained on the ground control frequency, taxied to the hold short line for runway 5, and came to a complete stop. While waiting at the hold short line, another airplane landed and taxied clear of the runway. We observed no other traffic in the area and heard no transmission on the radio. My student closed his window and adjusted his air vents, the switched to the tower frequency and told the controller that we were at runway 5, ready for takeoff with a north departure. Both the student and I heard the controller say, 'taxi on runway 5.' my student repeated 'taxi on runway 5,' then proceeded to taxi onto runway 5. As we taxied, my student and I overheard the controller giving an IFR clearance to a jet parked on the ramp. A few seconds later, the controller screamed at us to exit the runway and asked if an instructor was on board the airplane. I answered affirmative and was told by the controller to taxi back to our ramp and have my supervisor call him immediately. I told the controller that we understood the words, 'taxi on runway 5,' and as a result, did so. The controller answered in a very harsh tone that he never issued such a clearance and that I should know better. Upon arrival at the flight school, I informed my supervisor of what had happened, and he immediately telephoned the controller. The controller stated to him that we were issued a clearance to taxi to the runway, not on the runway. The controller also stated that he might violate me for taxiing onto an active runway without permission. The controller instructed my supervisor to call him the next day when he had made a decision as to whether to violate me. The following day my supervisor called the controller, who stated that he would not violate me for the incident. I believe the situation occurred due to a breakdown in communications, and the fact that the controller had been handling two frequencies at the same time. The controller clearly did not know our position at the hold short line or he would have never issued a clearance to taxi to the runway, if that was in fact what he had said. The controller was also not listening when my student that he was taxing on runway 5. At the time of the occurrence, there was no other air or ground traffic in the vicinity of the airport.

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Original NASA ASRS Text

Title: A GA TRAINING FLT IS ACCUSED OF A RWY INCURSION AFTER THE COMBINED LOCAL CTLR HAD GIVEN THE FLT A CLRNC TO '...TAXI ON RWY...' WHEN THE CREW HAD RPTED READY FOR TKOF RWY 5 AT BCT, FL.

Narrative: I AM A FLT INSTRUCTOR FOR A UNIVERSITY IN FL. MY STUDENT AND I WERE PARKED ON THE FLT SCHOOL RAMP WAITING TO CALL GND CTL FOR CLRNC TO TAXI. MY STUDENT CONTACTED GND CTL AND WAS TOLD TO TAXI TO RWY 5, ONE OF OUR TWO RWYS AT BOCA ARPT. THE STUDENT REPEATED THE CLRNC BACK TO THE CTLR AND WE TAXIED TO THE RUN-UP AREA FOR RWY 5. WHILE TAXIING, I NOTICED THE SAME CTLR WHO ISSUED THE TAXI CLRNC TO US WAS ALSO OP THE TWR FREQ, A COMMON PRACTICE AT THE BOCA RATON ARPT. I ALSO NOTICED THAT THIS CTLR IS THE SAME ON THAT DOES NOT USE THE PHONETIC ALPHABET WHEN REFERRING TO OUR ACFT OR OTHERS IN THE AREA. FOLLOWING RUN-UP, MY STUDENT REMAINED ON THE GND CTL FREQ, TAXIED TO THE HOLD SHORT LINE FOR RWY 5, AND CAME TO A COMPLETE STOP. WHILE WAITING AT THE HOLD SHORT LINE, ANOTHER AIRPLANE LANDED AND TAXIED CLR OF THE RWY. WE OBSERVED NO OTHER TFC IN THE AREA AND HEARD NO XMISSION ON THE RADIO. MY STUDENT CLOSED HIS WINDOW AND ADJUSTED HIS AIR VENTS, THE SWITCHED TO THE TWR FREQ AND TOLD THE CTLR THAT WE WERE AT RWY 5, READY FOR TAKEOFF WITH A N DEP. BOTH THE STUDENT AND I HEARD THE CTLR SAY, 'TAXI ON RWY 5.' MY STUDENT REPEATED 'TAXI ON RWY 5,' THEN PROCEEDED TO TAXI ONTO RWY 5. AS WE TAXIED, MY STUDENT AND I OVERHEARD THE CTLR GIVING AN IFR CLRNC TO A JET PARKED ON THE RAMP. A FEW SECONDS LATER, THE CTLR SCREAMED AT US TO EXIT THE RUNWAY AND ASKED IF AN INSTRUCTOR WAS ON BOARD THE AIRPLANE. I ANSWERED AFFIRMATIVE AND WAS TOLD BY THE CTLR TO TAXI BACK TO OUR RAMP AND HAVE MY SUPVR CALL HIM IMMEDIATELY. I TOLD THE CTLR THAT WE UNDERSTOOD THE WORDS, 'TAXI ON RWY 5,' AND AS A RESULT, DID SO. THE CTLR ANSWERED IN A VERY HARSH TONE THAT HE NEVER ISSUED SUCH A CLRNC AND THAT I SHOULD KNOW BETTER. UPON ARRIVAL AT THE FLT SCHOOL, I INFORMED MY SUPVR OF WHAT HAD HAPPENED, AND HE IMMEDIATELY TELEPHONED THE CTLR. THE CTLR STATED TO HIM THAT WE WERE ISSUED A CLRNC TO TAXI TO THE RWY, NOT ON THE RWY. THE CTLR ALSO STATED THAT HE MIGHT VIOLATE ME FOR TAXIING ONTO AN ACTIVE RWY WITHOUT PERMISSION. THE CTLR INSTRUCTED MY SUPVR TO CALL HIM THE NEXT DAY WHEN HE HAD MADE A DECISION AS TO WHETHER TO VIOLATE ME. THE FOLLOWING DAY MY SUPVR CALLED THE CTLR, WHO STATED THAT HE WOULD NOT VIOLATE ME FOR THE INCIDENT. I BELIEVE THE SIT OCCURRED DUE TO A BREAKDOWN IN COMS, AND THE FACT THAT THE CTLR HAD BEEN HANDLING TWO FREQUENCIES AT THE SAME TIME. THE CTLR CLEARLY DID NOT KNOW OUR POSITION AT THE HOLD SHORT LINE OR HE WOULD HAVE NEVER ISSUED A CLRNC TO TAXI TO THE RWY, IF THAT WAS IN FACT WHAT HE HAD SAID. THE CTLR WAS ALSO NOT LISTENING WHEN MY STUDENT THAT HE WAS TAXING ON RWY 5. AT THE TIME OF THE OCCURRENCE, THERE WAS NO OTHER AIR OR GND TFC IN THE VICINITY OF THE ARPT.

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.