Narrative:

I was on a VFR flight from wickenburg, az, to marana, az. Prior to my flight, I performed a preflight at home by looking in my commercial directory for the marana airport. The identifier I found was mzj. I then utilized a new flight planner to view the route and check WX. When we arrived at the airport, I called unicom (123.5) at about 7 mi north of the airport. There was no answer. I called again with no answer. I knew the winds were light and the pattern was right hand for runway 30 at mzj. So, I entered a right hand pattern, observed the windsock, which appeared ok for runway 30. I reported downwind, base, and final, heard no aircraft and saw no aircraft except for an aerobatic aircraft approximately 3 mi southwest of the airport finishing a maneuver. On 1/2 mi final to runway 30 my passenger observed a plane (aerobatic) landing runway 12. I immediately executed a go around moving to the right of the runway. On climb out I observed a cessna that appeared to be on final for runway 12, aborting the approach and climbing left. It all worked out. I left the area and called FSS to check frequencys and found I was using 123.5 which was for mzj, 8 mi north. Marana (avq) which is the airport intended was 123.0. Both airports have runways 12/30 with right patterns for runway 30.

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Original NASA ASRS Text

Title: LANCAIR 4 PLT ENCOUNTERS OPPOSITE DIRECTION LNDG TFC AT AVQ WHILE USING THE UNICOM FREQ FOR MZJ.

Narrative: I WAS ON A VFR FLT FROM WICKENBURG, AZ, TO MARANA, AZ. PRIOR TO MY FLT, I PERFORMED A PREFLT AT HOME BY LOOKING IN MY COMMERCIAL DIRECTORY FOR THE MARANA ARPT. THE IDENTIFIER I FOUND WAS MZJ. I THEN UTILIZED A NEW FLT PLANNER TO VIEW THE RTE AND CHK WX. WHEN WE ARRIVED AT THE ARPT, I CALLED UNICOM (123.5) AT ABOUT 7 MI N OF THE ARPT. THERE WAS NO ANSWER. I CALLED AGAIN WITH NO ANSWER. I KNEW THE WINDS WERE LIGHT AND THE PATTERN WAS R HAND FOR RWY 30 AT MZJ. SO, I ENTERED A R HAND PATTERN, OBSERVED THE WINDSOCK, WHICH APPEARED OK FOR RWY 30. I RPTED DOWNWIND, BASE, AND FINAL, HEARD NO ACFT AND SAW NO ACFT EXCEPT FOR AN AEROBATIC ACFT APPROX 3 MI SW OF THE ARPT FINISHING A MANEUVER. ON 1/2 MI FINAL TO RWY 30 MY PAX OBSERVED A PLANE (AEROBATIC) LNDG RWY 12. I IMMEDIATELY EXECUTED A GAR MOVING TO THE R OF THE RWY. ON CLBOUT I OBSERVED A CESSNA THAT APPEARED TO BE ON FINAL FOR RWY 12, ABORTING THE APCH AND CLBING L. IT ALL WORKED OUT. I LEFT THE AREA AND CALLED FSS TO CHK FREQS AND FOUND I WAS USING 123.5 WHICH WAS FOR MZJ, 8 MI N. MARANA (AVQ) WHICH IS THE ARPT INTENDED WAS 123.0. BOTH ARPTS HAVE RWYS 12/30 WITH R PATTERNS FOR RWY 30.

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.