Narrative:

We had just completed a waterfowl survey along the tennessee river and were preparing to depart hsv for our home base mgm. I was serving as PIC and flight instructor. The other occupant of the aircraft was a department executive who is a student pilot currently preparing for his private pilot check ride. He was to fly the aircraft and I would operate the radios. I received the ATIS information and called clearance delivery for their instructions. The radios in our aircraft are capable of 3 frequencys and I remember having to tune the frequency position where ground control is normally stored from 121.7 to 121.9. I then remember calling ground control and requesting taxi instructions. I remember hearing the controller say taxi to runway 18L. Another aircraft was already taxiing to the same runway and we followed approximately 100 yards behind him. He completed his run-up and departed as we completed our run-up. We then called ready for departure. The local controller then informed us that the ground controller said that we had not received a taxi clearance and warned us that, 'that could cause us problems in the future.' he then cleared us for takeoff. We discussed it briefly and both distinctly remember calling for taxi clearance and receiving that clearance. Before contacting departure control, I informed the local controller that we believed we had received and complied with the taxi instructions. This incident did not cause any traffic problems and I am only submitting this report as protection should the controller feel it necessary to take action.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT OF AN SMA SEL FAILED TO OBTAIN TAXI CLRNC DUE TO THINKING CLRNC FOR ANOTHER ACFT WAS FOR HIM.

Narrative: WE HAD JUST COMPLETED A WATERFOWL SURVEY ALONG THE TENNESSEE RIVER AND WERE PREPARING TO DEPART HSV FOR OUR HOME BASE MGM. I WAS SERVING AS PIC AND FLT INSTRUCTOR. THE OTHER OCCUPANT OF THE ACFT WAS A DEPT EXECUTIVE WHO IS A STUDENT PLT CURRENTLY PREPARING FOR HIS PVT PLT CHK RIDE. HE WAS TO FLY THE ACFT AND I WOULD OPERATE THE RADIOS. I RECEIVED THE ATIS INFO AND CALLED CLRNC DELIVERY FOR THEIR INSTRUCTIONS. THE RADIOS IN OUR ACFT ARE CAPABLE OF 3 FREQS AND I REMEMBER HAVING TO TUNE THE FREQ POS WHERE GND CTL IS NORMALLY STORED FROM 121.7 TO 121.9. I THEN REMEMBER CALLING GND CTL AND REQUESTING TAXI INSTRUCTIONS. I REMEMBER HEARING THE CTLR SAY TAXI TO RWY 18L. ANOTHER ACFT WAS ALREADY TAXIING TO THE SAME RWY AND WE FOLLOWED APPROX 100 YARDS BEHIND HIM. HE COMPLETED HIS RUN-UP AND DEPARTED AS WE COMPLETED OUR RUN-UP. WE THEN CALLED READY FOR DEP. THE LCL CTLR THEN INFORMED US THAT THE GND CTLR SAID THAT WE HAD NOT RECEIVED A TAXI CLRNC AND WARNED US THAT, 'THAT COULD CAUSE US PROBS IN THE FUTURE.' HE THEN CLRED US FOR TKOF. WE DISCUSSED IT BRIEFLY AND BOTH DISTINCTLY REMEMBER CALLING FOR TAXI CLRNC AND RECEIVING THAT CLRNC. BEFORE CONTACTING DEP CTL, I INFORMED THE LCL CTLR THAT WE BELIEVED WE HAD RECEIVED AND COMPLIED WITH THE TAXI INSTRUCTIONS. THIS INCIDENT DID NOT CAUSE ANY TFC PROBS AND I AM ONLY SUBMITTING THIS RPT AS PROTECTION SHOULD THE CTLR FEEL IT NECESSARY TO TAKE ACTION.

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.