Narrative:

I was returning to the airport for landing in an aircraft at 1200' AGL when I observed a small aircraft in my 11 to 1 O'clock position performing what appeared to be random turning and circling maneuvers. As I approached the airport I observed the aircraft passing from my left to right in a flight path at approximately 90 degrees to my own at 1 1/2 to 2 mi. As I continued inbound I observed the other aircraft beginning a right turn which continued until it's heading was approximately 225 degrees relative to my own. Although prepared to take evasive action, I did not do so because it became apparent that the other aircraft would pass behind and slightly above my own. Upon landing the pilot of the other aircraft stated that I had come 'whizzing' under him and that it was my obligation to give way since he was the aircraft on the right. I pointed out that I had him in sight for 6-8 mi and that during that time he had been to my left, on parallel but opp course to my right and finally to my right when he turned into me. Obviously he never saw me at all until the point at which he xed my flight path. The situation ended west/O further incident but I feel strongly that one should not be haphazardly swooping about in a high performance aircraft that close to a busy airport, particularly in an area which was within approximately 10 degrees of the alignment of the departure runway and, in addition, in the corridor which contains most of the arrival traffic.

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Original NASA ASRS Text

Title: TWO SMAS HAVE NMAC NEAR THE PDK ATA.

Narrative: I WAS RETURNING TO THE ARPT FOR LNDG IN AN ACFT AT 1200' AGL WHEN I OBSERVED A SMA IN MY 11 TO 1 O'CLOCK POS PERFORMING WHAT APPEARED TO BE RANDOM TURNING AND CIRCLING MANEUVERS. AS I APCHED THE ARPT I OBSERVED THE ACFT PASSING FROM MY L TO R IN A FLT PATH AT APPROX 90 DEGS TO MY OWN AT 1 1/2 TO 2 MI. AS I CONTINUED INBND I OBSERVED THE OTHER ACFT BEGINNING A R TURN WHICH CONTINUED UNTIL IT'S HDG WAS APPROX 225 DEGS RELATIVE TO MY OWN. ALTHOUGH PREPARED TO TAKE EVASIVE ACTION, I DID NOT DO SO BECAUSE IT BECAME APPARENT THAT THE OTHER ACFT WOULD PASS BEHIND AND SLIGHTLY ABOVE MY OWN. UPON LNDG THE PLT OF THE OTHER ACFT STATED THAT I HAD COME 'WHIZZING' UNDER HIM AND THAT IT WAS MY OBLIGATION TO GIVE WAY SINCE HE WAS THE ACFT ON THE R. I POINTED OUT THAT I HAD HIM IN SIGHT FOR 6-8 MI AND THAT DURING THAT TIME HE HAD BEEN TO MY L, ON PARALLEL BUT OPP COURSE TO MY R AND FINALLY TO MY R WHEN HE TURNED INTO ME. OBVIOUSLY HE NEVER SAW ME AT ALL UNTIL THE POINT AT WHICH HE XED MY FLT PATH. THE SITUATION ENDED W/O FURTHER INCIDENT BUT I FEEL STRONGLY THAT ONE SHOULD NOT BE HAPHAZARDLY SWOOPING ABOUT IN A HIGH PERFORMANCE ACFT THAT CLOSE TO A BUSY ARPT, PARTICULARLY IN AN AREA WHICH WAS WITHIN APPROX 10 DEGS OF THE ALIGNMENT OF THE DEP RWY AND, IN ADDITION, IN THE CORRIDOR WHICH CONTAINS MOST OF THE ARR TFC.

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.