Narrative:

I took off from runway 20 intending a full stop after 1 circuit of the traffic pattern. There was 1 other plane in the pattern ahead of me. By the time I was abeam the arrival end of runway 20, that aircraft had completed a touch and go and I heard another announce inbound on the localizer 20 approach. I asked that pilot where he was and he replied he was at 'talac' (final approach fix, 4/5 DME from threshold), and that he 'had me in sight.' not seeing anyone on final and assuming the plane I spoke with was still 3-4 mi out, I turned a tight left base. While turning, I heard calls suggesting another plane on the localizer and fearing he might be closer than the original aircraft, I rolled out of the turn to look back up final. At this point a high wing plane passed approximately 500-1000 ft in front of me on final approach. The other plane completed a touch and go landing and departed. Several attempts to contact him on CTAF were unsuccessful. I do not know if the plane I encountered was the one I spoke with or another one. Problems such as this are not uncommon at mgy when aircraft executing the localizer approach mix with VFR traffic in the pattern. Extreme vigilance is required at all times in the pattern.

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Original NASA ASRS Text

Title: PLT OF SMA IN TFC PATTERN AT UNCTLED ARPT TOOK EVASIVE ACTION TO AVOID ANOTHER SMA MAKING A TOUCH AND GO FROM STRAIGHT IN APCH.

Narrative: I TOOK OFF FROM RWY 20 INTENDING A FULL STOP AFTER 1 CIRCUIT OF THE TFC PATTERN. THERE WAS 1 OTHER PLANE IN THE PATTERN AHEAD OF ME. BY THE TIME I WAS ABEAM THE ARR END OF RWY 20, THAT ACFT HAD COMPLETED A TOUCH AND GO AND I HEARD ANOTHER ANNOUNCE INBOUND ON THE LOC 20 APCH. I ASKED THAT PLT WHERE HE WAS AND HE REPLIED HE WAS AT 'TALAC' (FINAL APCH FIX, 4/5 DME FROM THRESHOLD), AND THAT HE 'HAD ME IN SIGHT.' NOT SEEING ANYONE ON FINAL AND ASSUMING THE PLANE I SPOKE WITH WAS STILL 3-4 MI OUT, I TURNED A TIGHT L BASE. WHILE TURNING, I HEARD CALLS SUGGESTING ANOTHER PLANE ON THE LOC AND FEARING HE MIGHT BE CLOSER THAN THE ORIGINAL ACFT, I ROLLED OUT OF THE TURN TO LOOK BACK UP FINAL. AT THIS POINT A HIGH WING PLANE PASSED APPROX 500-1000 FT IN FRONT OF ME ON FINAL APCH. THE OTHER PLANE COMPLETED A TOUCH AND GO LNDG AND DEPARTED. SEVERAL ATTEMPTS TO CONTACT HIM ON CTAF WERE UNSUCCESSFUL. I DO NOT KNOW IF THE PLANE I ENCOUNTERED WAS THE ONE I SPOKE WITH OR ANOTHER ONE. PROBLEMS SUCH AS THIS ARE NOT UNCOMMON AT MGY WHEN ACFT EXECUTING THE LOC APCH MIX WITH VFR TFC IN THE PATTERN. EXTREME VIGILANCE IS REQUIRED AT ALL TIMES IN THE PATTERN.

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.