Narrative:

On mar/xa/01, at approximately XA45 local I was involved in the following incident at erie tri-county airport, co (48V). I was the pilot, and sole occupant, of a rented C172, practicing airport entry procedures and touch and goes. I hold a commercial pilot certificate, instrument airplane rating. This flight was conducted in visual meteorological conditions and no VFR flight plan was filed. After reporting my position on CTAF 5 mi out, over the airport, entering on the 45 degree, and then downwind with no other aircraft in sight or on frequency, I heard, aircraft Y report downwind, saying either 'behind you' or 'number two.' I then reported turning base, then final, each time reporting that it would be a touch and go, each time hearing aircraft Y reporting shortly thereafter his position. I never could see this airplane, so I kept my speed up and wasted no time or distance in my turns or landing. I made my landing (runway 33) and prepared to continue my touch and go. As I was just lifting off I saw aircraft Y speed by me off my right side in very close proximity and with no warning. I judged and distance no more than a wingspan or two away, speed approximately 100 KTS, ht 10-20 ft above the ground. From what I could tell, there was no taxiway on that side, just grass and gravel, with homes immediately beyond that as this is a residential air park. I immediately asked who the C206 was that just passed me on the runway, although I saw his type, paint scheme, and most of his tail number. He did not respond. At this time I was now lifting off the ground, as I did aircraft Y made a steep left turn directly in front of me, between 100-200 ft above the ground. I again asked him what he was doing, no response. The last I saw aircraft Y he was making a very low downwind, no more than 500 ft AGL. I climbed up to pattern altitude and continued my pattern work, occasionally hearing aircraft Y but never seeing him. On about my third touch and go, aircraft Y asked me either where I was, where I was from, or if I was from there (48V). I couldn't understand which, but I gave my position as in the middle of the runway as I was about to execute another takeoff from a touch and go. That was my last contact with aircraft Y.

Related reports:

Google
 

Original NASA ASRS Text

Title: A C172 PLT HAS AN NMAC WITH A C206 AS HE IS BREAKING GND DURING A TOUCH AND GO AT 48V, CO.

Narrative: ON MAR/XA/01, AT APPROX XA45 LCL I WAS INVOLVED IN THE FOLLOWING INCIDENT AT ERIE TRI-COUNTY ARPT, CO (48V). I WAS THE PLT, AND SOLE OCCUPANT, OF A RENTED C172, PRACTICING ARPT ENTRY PROCS AND TOUCH AND GOES. I HOLD A COMMERCIAL PLT CERTIFICATE, INST AIRPLANE RATING. THIS FLT WAS CONDUCTED IN VISUAL METEOROLOGICAL CONDITIONS AND NO VFR FLT PLAN WAS FILED. AFTER RPTING MY POS ON CTAF 5 MI OUT, OVER THE ARPT, ENTERING ON THE 45 DEG, AND THEN DOWNWIND WITH NO OTHER ACFT IN SIGHT OR ON FREQ, I HEARD, ACFT Y RPT DOWNWIND, SAYING EITHER 'BEHIND YOU' OR 'NUMBER TWO.' I THEN RPTED TURNING BASE, THEN FINAL, EACH TIME RPTING THAT IT WOULD BE A TOUCH AND GO, EACH TIME HEARING ACFT Y RPTING SHORTLY THEREAFTER HIS POS. I NEVER COULD SEE THIS AIRPLANE, SO I KEPT MY SPD UP AND WASTED NO TIME OR DISTANCE IN MY TURNS OR LNDG. I MADE MY LNDG (RWY 33) AND PREPARED TO CONTINUE MY TOUCH AND GO. AS I WAS JUST LIFTING OFF I SAW ACFT Y SPD BY ME OFF MY R SIDE IN VERY CLOSE PROX AND WITH NO WARNING. I JUDGED AND DISTANCE NO MORE THAN A WINGSPAN OR TWO AWAY, SPD APPROX 100 KTS, HT 10-20 FT ABOVE THE GND. FROM WHAT I COULD TELL, THERE WAS NO TXWY ON THAT SIDE, JUST GRASS AND GRAVEL, WITH HOMES IMMEDIATELY BEYOND THAT AS THIS IS A RESIDENTIAL AIR PARK. I IMMEDIATELY ASKED WHO THE C206 WAS THAT JUST PASSED ME ON THE RWY, ALTHOUGH I SAW HIS TYPE, PAINT SCHEME, AND MOST OF HIS TAIL NUMBER. HE DID NOT RESPOND. AT THIS TIME I WAS NOW LIFTING OFF THE GND, AS I DID ACFT Y MADE A STEEP L TURN DIRECTLY IN FRONT OF ME, BTWN 100-200 FT ABOVE THE GND. I AGAIN ASKED HIM WHAT HE WAS DOING, NO RESPONSE. THE LAST I SAW ACFT Y HE WAS MAKING A VERY LOW DOWNWIND, NO MORE THAN 500 FT AGL. I CLBED UP TO PATTERN ALT AND CONTINUED MY PATTERN WORK, OCCASIONALLY HEARING ACFT Y BUT NEVER SEEING HIM. ON ABOUT MY THIRD TOUCH AND GO, ACFT Y ASKED ME EITHER WHERE I WAS, WHERE I WAS FROM, OR IF I WAS FROM THERE (48V). I COULDN'T UNDERSTAND WHICH, BUT I GAVE MY POS AS IN THE MIDDLE OF THE RWY AS I WAS ABOUT TO EXECUTE ANOTHER TKOF FROM A TOUCH AND GO. THAT WAS MY LAST CONTACT WITH ACFT Y.

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.