Narrative:

Nx had asked for airport advisories and we gave him the active runway and reported our position in a left downwind for runway 21. He stated his position as south of the field. We called our left base turn and nx called downwind. I looked in the downwind area and did not see the aircraft (grumman single). We called turn to final and were on GS at 130 KIAS. I looked to my left at approximately 400-300 ft AGL and saw the airplane in a left bank, converging on our flight path. Performed a go around to prevent any possible conflict. I believe the other pilot was spooked because of the snow showers that were in the area at the time.

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Original NASA ASRS Text

Title: A CPR LTT HAD TO TAKE EVASIVE ACTION GAR TO AVOID A GRUMMAN SMA IN THE VISUAL TFC PATTERN.

Narrative: NX HAD ASKED FOR ARPT ADVISORIES AND WE GAVE HIM THE ACTIVE RWY AND RPTED OUR POS IN A L DOWNWIND FOR RWY 21. HE STATED HIS POS AS S OF THE FIELD. WE CALLED OUR L BASE TURN AND NX CALLED DOWNWIND. I LOOKED IN THE DOWNWIND AREA AND DID NOT SEE THE ACFT (GRUMMAN SINGLE). WE CALLED TURN TO FINAL AND WERE ON GS AT 130 KIAS. I LOOKED TO MY L AT APPROX 400-300 FT AGL AND SAW THE AIRPLANE IN A L BANK, CONVERGING ON OUR FLT PATH. PERFORMED A GAR TO PREVENT ANY POSSIBLE CONFLICT. I BELIEVE THE OTHER PLT WAS SPOOKED BECAUSE OF THE SNOW SHOWERS THAT WERE IN THE AREA AT THE TIME.

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.