Narrative:

As I prepared to back taxi the runway for takeoff (the taxiway doesn't extend to that end of the runway) I observed a small biplane (probably a pitts) make an attempted touch and go which I can only describe as a high speed ricochet from the pavement. Another airplane departed, then I cleared the area and announced my back taxi. The second airplane called and advised me that a small biplane in the pattern apparently was NORDO. I cleared final, base and the lower part of downwind, and began the back taxi. Part way down the runway, I saw the biplane on downwind. The biplane, just past the end of the runway, began an abbreviated approach, consisting of a 30-40 degree bank, 180 degree turn through base to final, evidently not seeing me on the runway. On final, I believed the biplane pilot could not see the approach end of the runway due to the raised cowling. My taxi at this point had gone to high speed, with my tailwheel off the ground. I dropped the tailwheel again as I turned off the runway into the turnaround. The biplane touched down in the first 1000 ft of runway 2-3 seconds after I cleared into the turnaround. I later learned that the aircraft which radioed the warning had to taxi out of takeoff position back into the turnaround when the biplane made the same kind of approach at him. I probably should have stayed to have a talk with the biplane pilot, but I had a student at my home airport and had to get back there. I am working that issue through instructors I know at that airport. For my part, I am going to give a wider berth to any aircraft I observe flying strangely.

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Original NASA ASRS Text

Title: NMAC AT NON TWR ARPT WITH 1 ACFT BACK TAXIING AND 1 IN THE PATTERN, LNDG.

Narrative: AS I PREPARED TO BACK TAXI THE RWY FOR TKOF (THE TXWY DOESN'T EXTEND TO THAT END OF THE RWY) I OBSERVED A SMALL BIPLANE (PROBABLY A PITTS) MAKE AN ATTEMPTED TOUCH AND GO WHICH I CAN ONLY DESCRIBE AS A HIGH SPD RICOCHET FROM THE PAVEMENT. ANOTHER AIRPLANE DEPARTED, THEN I CLRED THE AREA AND ANNOUNCED MY BACK TAXI. THE SECOND AIRPLANE CALLED AND ADVISED ME THAT A SMALL BIPLANE IN THE PATTERN APPARENTLY WAS NORDO. I CLRED FINAL, BASE AND THE LOWER PART OF DOWNWIND, AND BEGAN THE BACK TAXI. PART WAY DOWN THE RWY, I SAW THE BIPLANE ON DOWNWIND. THE BIPLANE, JUST PAST THE END OF THE RWY, BEGAN AN ABBREVIATED APCH, CONSISTING OF A 30-40 DEG BANK, 180 DEG TURN THROUGH BASE TO FINAL, EVIDENTLY NOT SEEING ME ON THE RWY. ON FINAL, I BELIEVED THE BIPLANE PLT COULD NOT SEE THE APCH END OF THE RWY DUE TO THE RAISED COWLING. MY TAXI AT THIS POINT HAD GONE TO HIGH SPD, WITH MY TAILWHEEL OFF THE GND. I DROPPED THE TAILWHEEL AGAIN AS I TURNED OFF THE RWY INTO THE TURNAROUND. THE BIPLANE TOUCHED DOWN IN THE FIRST 1000 FT OF RWY 2-3 SECONDS AFTER I CLRED INTO THE TURNAROUND. I LATER LEARNED THAT THE ACFT WHICH RADIOED THE WARNING HAD TO TAXI OUT OF TKOF POS BACK INTO THE TURNAROUND WHEN THE BIPLANE MADE THE SAME KIND OF APCH AT HIM. I PROBABLY SHOULD HAVE STAYED TO HAVE A TALK WITH THE BIPLANE PLT, BUT I HAD A STUDENT AT MY HOME ARPT AND HAD TO GET BACK THERE. I AM WORKING THAT ISSUE THROUGH INSTRUCTORS I KNOW AT THAT ARPT. FOR MY PART, I AM GOING TO GIVE A WIDER BERTH TO ANY ACFT I OBSERVE FLYING STRANGELY.

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.