Narrative:

I descended to the south of the airport and entered the pattern on a 45 degree entry. I announced my position and asked if any other traffic was in the pattern. At 1500 ft; established and in the downwind I extended my landing gear and noticed a C172 under and behind me. Due to the low wing and poor visibility down as a result of the wing confign; I did not notice this aircraft; and the high wing cessna did not notice me until I had flown in front of him. I continued to try to contact the aircraft by radio but was unsuccessful. Upon landing; I contacted unicom and they also tried to contact the aircraft. After the cessna landed; the pilot came over to discuss the situation. According to him; he had made pattern calls; but not myself nor any other airplane in the pattern was able to hear him.

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Original NASA ASRS Text

Title: TWIN PLT UPON ENTERING UNCTLED ARPT PATTERN HAS NMAC WITH C172 ON DOWNWIND ENTRY.

Narrative: I DSNDED TO THE S OF THE ARPT AND ENTERED THE PATTERN ON A 45 DEG ENTRY. I ANNOUNCED MY POS AND ASKED IF ANY OTHER TFC WAS IN THE PATTERN. AT 1500 FT; ESTABLISHED AND IN THE DOWNWIND I EXTENDED MY LNDG GEAR AND NOTICED A C172 UNDER AND BEHIND ME. DUE TO THE LOW WING AND POOR VISIBILITY DOWN AS A RESULT OF THE WING CONFIGN; I DID NOT NOTICE THIS ACFT; AND THE HIGH WING CESSNA DID NOT NOTICE ME UNTIL I HAD FLOWN IN FRONT OF HIM. I CONTINUED TO TRY TO CONTACT THE ACFT BY RADIO BUT WAS UNSUCCESSFUL. UPON LNDG; I CONTACTED UNICOM AND THEY ALSO TRIED TO CONTACT THE ACFT. AFTER THE CESSNA LANDED; THE PLT CAME OVER TO DISCUSS THE SITUATION. ACCORDING TO HIM; HE HAD MADE PATTERN CALLS; BUT NOT MYSELF NOR ANY OTHER AIRPLANE IN THE PATTERN WAS ABLE TO HEAR HIM.

Data retrieved from NASA's ASRS site as of January 2009 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.