Narrative:

I entered the traffic pattern at frederick municipal airport (fdk) for runway 23, announcing my position on downwind, base and final. Downwind extended about 1 1/2 mi from touchdown zone to allow for spacing with smaller, slower tail draggers, old small aircraft I believe, ahead. As my aircraft was 1/2 mi and about 250 ft AGL from runway end, a gyrocopter (tubular frame, no cabin there nearly impossible to see) appeared on a left base leg at about 150 ft altitude and 300-500 ft from the runway end. It turned final in front of me and touched down on the runway numbers as I executed a go around. Suggestions: 1) I have noticed an increasing incidence recently of pilots who are not vigilant in the pattern, looking for conflicting traffic, time for reemphasis in BFR's, etc. 2) gyrocopters, other tubular aircraft and ultralights which operated from airports shared with larger aircraft, should be required to meet some visibility standards, eg, high visibility panels, paint, etc.

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Original NASA ASRS Text

Title: NMAC AT NON TWR ARPT.

Narrative: I ENTERED THE TFC PATTERN AT FREDERICK MUNICIPAL ARPT (FDK) FOR RWY 23, ANNOUNCING MY POS ON DOWNWIND, BASE AND FINAL. DOWNWIND EXTENDED ABOUT 1 1/2 MI FROM TOUCHDOWN ZONE TO ALLOW FOR SPACING WITH SMALLER, SLOWER TAIL DRAGGERS, OLD SMA I BELIEVE, AHEAD. AS MY ACFT WAS 1/2 MI AND ABOUT 250 FT AGL FROM RWY END, A GYROCOPTER (TUBULAR FRAME, NO CABIN THERE NEARLY IMPOSSIBLE TO SEE) APPEARED ON A L BASE LEG AT ABOUT 150 FT ALT AND 300-500 FT FROM THE RWY END. IT TURNED FINAL IN FRONT OF ME AND TOUCHED DOWN ON THE RWY NUMBERS AS I EXECUTED A GAR. SUGGESTIONS: 1) I HAVE NOTICED AN INCREASING INCIDENCE RECENTLY OF PLTS WHO ARE NOT VIGILANT IN THE PATTERN, LOOKING FOR CONFLICTING TFC, TIME FOR REEMPHASIS IN BFR'S, ETC. 2) GYROCOPTERS, OTHER TUBULAR ACFT AND ULTRALIGHTS WHICH OPERATED FROM ARPTS SHARED WITH LARGER ACFT, SHOULD BE REQUIRED TO MEET SOME VISIBILITY STANDARDS, EG, HIGH VISIBILITY PANELS, PAINT, ETC.

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.