Narrative:

When I contacted tower, I reported ready at runway 10L, the active parallels for that day. I was told that I was cleared for takeoff. I acknowledged the takeoff instruction and rolled onto the runway. I stopped on the runway and pwred up to 50% power, checked the engine gauges and released the brakes. I applied full power and was airborne by mid field. At that time the tower called me and asked if he assigned me a heading after takeoff. I said that I did not have a heading assignment. The reply was something to the effect, 'that's right, because you were not cleared to take off.' while that short but rather shocking exchange was going on with me and the controller, I was rapidly closing the distance between myself and the low wing piper trainer dead ahead of me, also climbing out on runway 10L. My first thoughts were, ok, I screwed up. There was a piper in my windshield! Just as it registered that I needed to turn, I initiated a turn to the left (l-hand traffic for the left runway at fcm), the piper also initiated a left turn, I turned hard right and saw the piper fly under the wing of my plane. So now I have a near miss and an unauthorized departure against my ticket within a min of each other. At close to that same time, I was asked by the controller if I still wanted vectors to airlake. I said I was done flying for the day and asked to get sequenced into the pattern for a return to the FBO. I was told to stop my discrete squawk and that I was cleared to land on runway 10R. Turning base to runway 10R, I called the tower to confirm that I was cleared to land on runway 10R. He confirmed it and asked me to call the tower when I landed. The review of the tapes has me in the clear. It was a very, very busy day in the pattern at fcm. In my opinion, that controller took a quick look and thought he saw something but really didn't. When I started to eat-up the guy in front of me, he immediately thought I was to blame.

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Original NASA ASRS Text

Title: BE58 PLT EXPERIENCED NMAC AFTER DEP FROM FCM WITH ANOTHER DEP AND IS INITIALLY CHALLENGED BY ATC FOR UNAUTH TKOF BUT TAPES PROVED PLT CORRECT.

Narrative: WHEN I CONTACTED TWR, I RPTED READY AT RWY 10L, THE ACTIVE PARALLELS FOR THAT DAY. I WAS TOLD THAT I WAS CLRED FOR TKOF. I ACKNOWLEDGED THE TKOF INSTRUCTION AND ROLLED ONTO THE RWY. I STOPPED ON THE RWY AND PWRED UP TO 50% PWR, CHKED THE ENG GAUGES AND RELEASED THE BRAKES. I APPLIED FULL PWR AND WAS AIRBORNE BY MID FIELD. AT THAT TIME THE TWR CALLED ME AND ASKED IF HE ASSIGNED ME A HDG AFTER TKOF. I SAID THAT I DID NOT HAVE A HDG ASSIGNMENT. THE REPLY WAS SOMETHING TO THE EFFECT, 'THAT'S RIGHT, BECAUSE YOU WERE NOT CLRED TO TAKE OFF.' WHILE THAT SHORT BUT RATHER SHOCKING EXCHANGE WAS GOING ON WITH ME AND THE CTLR, I WAS RAPIDLY CLOSING THE DISTANCE BTWN MYSELF AND THE LOW WING PIPER TRAINER DEAD AHEAD OF ME, ALSO CLBING OUT ON RWY 10L. MY FIRST THOUGHTS WERE, OK, I SCREWED UP. THERE WAS A PIPER IN MY WINDSHIELD! JUST AS IT REGISTERED THAT I NEEDED TO TURN, I INITIATED A TURN TO THE L (L-HAND TFC FOR THE L RWY AT FCM), THE PIPER ALSO INITIATED A L TURN, I TURNED HARD R AND SAW THE PIPER FLY UNDER THE WING OF MY PLANE. SO NOW I HAVE A NEAR MISS AND AN UNAUTH DEP AGAINST MY TICKET WITHIN A MIN OF EACH OTHER. AT CLOSE TO THAT SAME TIME, I WAS ASKED BY THE CTLR IF I STILL WANTED VECTORS TO AIRLAKE. I SAID I WAS DONE FLYING FOR THE DAY AND ASKED TO GET SEQUENCED INTO THE PATTERN FOR A RETURN TO THE FBO. I WAS TOLD TO STOP MY DISCRETE SQUAWK AND THAT I WAS CLRED TO LAND ON RWY 10R. TURNING BASE TO RWY 10R, I CALLED THE TWR TO CONFIRM THAT I WAS CLRED TO LAND ON RWY 10R. HE CONFIRMED IT AND ASKED ME TO CALL THE TWR WHEN I LANDED. THE REVIEW OF THE TAPES HAS ME IN THE CLR. IT WAS A VERY, VERY BUSY DAY IN THE PATTERN AT FCM. IN MY OPINION, THAT CTLR TOOK A QUICK LOOK AND THOUGHT HE SAW SOMETHING BUT REALLY DIDN'T. WHEN I STARTED TO EAT-UP THE GUY IN FRONT OF ME, HE IMMEDIATELY THOUGHT I WAS TO BLAME.

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.