Narrative:

Flying a homebuilt/experimental thorp T-18 in an area with which I am very familiar; I approached mvi to land. Conditions were cavu. Surface wind was light; favoring the preferred calm wind runway; runway 20. I entered the pattern for runway 20; and made successive position reports on CTAF; in aim-prescribed manner. Seconds before touchdown I saw an aircraft on the ground at the far end of the runway; head-on to me; apparently having landed opposite direction on runway 2. Both aircraft had touched down almost simultaneously; at their respective ends; and were slowed to taxi speed while still separated by most of the length of the runway. I turned around and back-taxied to the ramp; followed by the other aircraft; a cirrus SR22. In consultation with the pilot of the cirrus; it was determined that he had not heard any of my reports on CTAF nor I his; because he was on an incorrect frequency; that for his previous airport of landing. His right seat passenger saw my aircraft on the runway at about the same moment I became aware of the cirrus. The cirrus pilot was very apologetic and considered the event to be his fault; but my view is that we both had a responsibility to 'see and avoid;' and I had definitely been deficient in that regard. This event was a shock to me and caused me to review where I have been directing most of my scan during the late phase of final approach and the early phase of takeoff. I believe complacency had set in and I have been 'looking but not seeing.' I need to assign more attention to the opposite final approach course. Additionally; my scan could stand to be fine tuned in general in the pattern and its environs -- the other aircraft must have been within my immediate proximity before landing; yet I never saw it. By extension; my scan needs improvement in all other phases of flight.

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Original NASA ASRS Text

Title: T-18 HOMEBUILT ACFT LANDED AT UNCONTROLLED ARPT ONLY TO DISCOVER THAT ANOTHER ACFT HAD SIMULTANEOUSLY LANDED ON THE SAME RWY IN THE OPPOSITE DIRECTION.

Narrative: FLYING A HOMEBUILT/EXPERIMENTAL THORP T-18 IN AN AREA WITH WHICH I AM VERY FAMILIAR; I APCHED MVI TO LAND. CONDITIONS WERE CAVU. SURFACE WIND WAS LIGHT; FAVORING THE PREFERRED CALM WIND RWY; RWY 20. I ENTERED THE PATTERN FOR RWY 20; AND MADE SUCCESSIVE POS RPTS ON CTAF; IN AIM-PRESCRIBED MANNER. SECONDS BEFORE TOUCHDOWN I SAW AN ACFT ON THE GND AT THE FAR END OF THE RWY; HEAD-ON TO ME; APPARENTLY HAVING LANDED OPPOSITE DIRECTION ON RWY 2. BOTH ACFT HAD TOUCHED DOWN ALMOST SIMULTANEOUSLY; AT THEIR RESPECTIVE ENDS; AND WERE SLOWED TO TAXI SPD WHILE STILL SEPARATED BY MOST OF THE LENGTH OF THE RWY. I TURNED AROUND AND BACK-TAXIED TO THE RAMP; FOLLOWED BY THE OTHER ACFT; A CIRRUS SR22. IN CONSULTATION WITH THE PLT OF THE CIRRUS; IT WAS DETERMINED THAT HE HAD NOT HEARD ANY OF MY RPTS ON CTAF NOR I HIS; BECAUSE HE WAS ON AN INCORRECT FREQ; THAT FOR HIS PREVIOUS ARPT OF LNDG. HIS R SEAT PAX SAW MY ACFT ON THE RWY AT ABOUT THE SAME MOMENT I BECAME AWARE OF THE CIRRUS. THE CIRRUS PLT WAS VERY APOLOGETIC AND CONSIDERED THE EVENT TO BE HIS FAULT; BUT MY VIEW IS THAT WE BOTH HAD A RESPONSIBILITY TO 'SEE AND AVOID;' AND I HAD DEFINITELY BEEN DEFICIENT IN THAT REGARD. THIS EVENT WAS A SHOCK TO ME AND CAUSED ME TO REVIEW WHERE I HAVE BEEN DIRECTING MOST OF MY SCAN DURING THE LATE PHASE OF FINAL APCH AND THE EARLY PHASE OF TKOF. I BELIEVE COMPLACENCY HAD SET IN AND I HAVE BEEN 'LOOKING BUT NOT SEEING.' I NEED TO ASSIGN MORE ATTN TO THE OPPOSITE FINAL APCH COURSE. ADDITIONALLY; MY SCAN COULD STAND TO BE FINE TUNED IN GENERAL IN THE PATTERN AND ITS ENVIRONS -- THE OTHER ACFT MUST HAVE BEEN WITHIN MY IMMEDIATE PROX BEFORE LNDG; YET I NEVER SAW IT. BY EXTENSION; MY SCAN NEEDS IMPROVEMENT IN ALL OTHER PHASES OF FLT.

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.