Narrative:

On nov/xa/98 at approximately XA15Z, I was operating a C172RG on a solo training mission to prepare for an upcoming assistant chief flight instructor ride with the local FSDO. I taxied out and performed the appropriate before takeoff checks, and configured the aircraft for a soft field takeoff. I then called the tower on frequency 120.3 and stated that I was #2 in sequence ready for departure runway 28. The aircraft in front of me was a company owned and operated C172. #2 was taxied into position to hold on runway 28 as a piper seminole exited the runway. After piper was clear of the runway, the tower cleared #2 for takeoff. I then again, because the first transmission was not acknowledged, call, stated I was ready for departure. The tower controller asked me if I was ready to go, in an urgent tone. I stated, 'affirmative' and was cleared for takeoff. I started a rolling takeoff to practice a soft field takeoff just as I had planned. At this time, #2 was only approximately 1000 ft down the runway and not airborne. My aircraft was in a nose high attitude and I did not notice that the other aircraft was still on the runway. The tower began to tell me to hold my position. I was rolling at approximately 45 KTS in a nose high attitude. I reduced the throttle immediately and regained control of the aircraft, and stopped approximately 1000 ft down the runway. I observed the C172 lift off and begin his climb. I was worried that there was traffic cleared to land on the runway behind me, because of the way the clearance had been issued, however, this was not the case. I was then, when the appropriate separation existed, cleared for takeoff. When I returned to the airport, I called the tower. I was advised that I was being 'wrote up.' I don't believe I did anything wrong except comply with what I consider a risky clearance. As a controller myself, I tend to comply more often with the clrncs and not question them as much as other pilots. I will not do this in the future. In addition, I will ensure that standard ATC separation exists prior to beginning takeoff roll. If the clearance does not feel right from the beginning, I will not accept it.

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Original NASA ASRS Text

Title: PLT INSTRUCTOR IN A C172RG PRACTICING FOR AN FAA CHK RIDE MISINTERPED TWR INSTRUCTIONS AND STARTED TKOF ROLL BEFORE BEING CLRED. TWR CTLR INTERVENED AND INSTRUCTED HIM TO HOLD POS FOR SEPARATION WITH ANOTHER C172 ON THE TKOF ROLL AND HE ABORTED.

Narrative: ON NOV/XA/98 AT APPROX XA15Z, I WAS OPERATING A C172RG ON A SOLO TRAINING MISSION TO PREPARE FOR AN UPCOMING ASSISTANT CHIEF FLT INSTRUCTOR RIDE WITH THE LCL FSDO. I TAXIED OUT AND PERFORMED THE APPROPRIATE BEFORE TKOF CHKS, AND CONFIGURED THE ACFT FOR A SOFT FIELD TKOF. I THEN CALLED THE TWR ON FREQ 120.3 AND STATED THAT I WAS #2 IN SEQUENCE READY FOR DEP RWY 28. THE ACFT IN FRONT OF ME WAS A COMPANY OWNED AND OPERATED C172. #2 WAS TAXIED INTO POS TO HOLD ON RWY 28 AS A PIPER SEMINOLE EXITED THE RWY. AFTER PIPER WAS CLR OF THE RWY, THE TWR CLRED #2 FOR TKOF. I THEN AGAIN, BECAUSE THE FIRST XMISSION WAS NOT ACKNOWLEDGED, CALL, STATED I WAS READY FOR DEP. THE TWR CTLR ASKED ME IF I WAS READY TO GO, IN AN URGENT TONE. I STATED, 'AFFIRMATIVE' AND WAS CLRED FOR TKOF. I STARTED A ROLLING TKOF TO PRACTICE A SOFT FIELD TKOF JUST AS I HAD PLANNED. AT THIS TIME, #2 WAS ONLY APPROX 1000 FT DOWN THE RWY AND NOT AIRBORNE. MY ACFT WAS IN A NOSE HIGH ATTITUDE AND I DID NOT NOTICE THAT THE OTHER ACFT WAS STILL ON THE RWY. THE TWR BEGAN TO TELL ME TO HOLD MY POS. I WAS ROLLING AT APPROX 45 KTS IN A NOSE HIGH ATTITUDE. I REDUCED THE THROTTLE IMMEDIATELY AND REGAINED CTL OF THE ACFT, AND STOPPED APPROX 1000 FT DOWN THE RWY. I OBSERVED THE C172 LIFT OFF AND BEGIN HIS CLB. I WAS WORRIED THAT THERE WAS TFC CLRED TO LAND ON THE RWY BEHIND ME, BECAUSE OF THE WAY THE CLRNC HAD BEEN ISSUED, HOWEVER, THIS WAS NOT THE CASE. I WAS THEN, WHEN THE APPROPRIATE SEPARATION EXISTED, CLRED FOR TKOF. WHEN I RETURNED TO THE ARPT, I CALLED THE TWR. I WAS ADVISED THAT I WAS BEING 'WROTE UP.' I DON'T BELIEVE I DID ANYTHING WRONG EXCEPT COMPLY WITH WHAT I CONSIDER A RISKY CLRNC. AS A CTLR MYSELF, I TEND TO COMPLY MORE OFTEN WITH THE CLRNCS AND NOT QUESTION THEM AS MUCH AS OTHER PLTS. I WILL NOT DO THIS IN THE FUTURE. IN ADDITION, I WILL ENSURE THAT STANDARD ATC SEPARATION EXISTS PRIOR TO BEGINNING TKOF ROLL. IF THE CLRNC DOES NOT FEEL RIGHT FROM THE BEGINNING, I WILL NOT ACCEPT IT.

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.