PLT OF HIGH PERFORMANCE SMA EXPERIENCES NMAC WITH BE50 DEPARTING FROM OPPOSITE END OF RWY AT AN UNCTLED ARPT.

Narrative

DURING PREPARATIONS FOR TKOF; I OBSERVED A BARON LAND AT AZ82 ON RWY 21. I TAXIED TO RWY 21 AND RAN UP THE ACFT; AND CALLED FOR DEP; ON UNICOM FREQ. I DID NOT HEAR ANY OTHER ACFT ON THE FREQ. WINDS WERE VIRTUALLY ZERO. AFTER TKOF ON RWY 21; SOMEONE ON THE FREQ SAID I HAD 'ALMOST HIT THEM;' AND ASKED IF I HAD ANNOUNCED MY DEP ON RWY 21. I ANSWERED AFFIRMATIVE. THE LANCAIR 235 I WAS FLYING HAS ZERO FORWARD VISIBILITY AFTER ROTATION AND I LATER LEARNED THAT THE BARON I HAD OBSERVED LAND ON RWY 21 HAD DROPPED OFF PAX AT THE OPPOSITE END OF THE ARPT; ANNOUNCED HIS DEP ON RWY 3; AND I PASSED APPROX 10 FT OVER THE TOP OF THAT ACFT AS HE WAS ON HIS TKOF ROLL. THE RWY AT AZ82 HAS A VERY LARGE HUMP IN THE MIDDLE BLOCKING THE VIEW OF THE OPPOSITE ENDS. BOTH RWYS ARE UPHILL TO THE CTR; AND THE HILL IS HIGH ENOUGH THAT IT HAS BEEN NOTED THAT ACFT ON THE GND ON EITHER END OF THE RWY CANNOT COMMUNICATE VIA RADIO. A THIRD PARTY WHO WITNESSED THE INCIDENT WITH A GND RADIO IN VIEW OF BOTH RWY ENDS HEARD BOTH OF US CALL IN SUCCESSION; DEMONSTRATING THAT WE DID NOT BLOCK EACH OTHER; AND THAT NEITHER HEARD OR ANSWERED THE OTHER. BECAUSE OF THIS KNOWN PROB; RWY 21 HAS BEEN DESIGNATED THE 'CALM WIND' RWY; UNTIL WINDS ARE ABOVE 5 KTS; AND THIS INFO WAS RECORDED WITH THE FAA FOR AZ82 AND HAS BEEN VIEWABLE ON LINE. LCL PLTS ARE CONCERNED BECAUSE OF THIS INCIDENT AND DISCUSSIONS HAVE ALREADY TAKEN PLACE TO REDOUBLE EFFORTS TO INSTALL AN ATIS AT THE ARPT; THAT WILL HAVE REAL TIME INFO ON WINDS; AND WILL REPEAT THE RWY 21 'CALM WIND' DESIGNATION ON THE AUDIBLE NOTAMS. SUPPLEMENTAL INFO FROM ACN 714702: I HAD JUST ARRIVED AT MOGOLLON AIRPARK (AZ82); OVERGAARD; AZ; LNDG ON RWY 21; TO PICK UP A SINGLE PAX. AZ82 IS A PVT ARPT AS PART OF A RESIDENTIAL AIRPARK COMMUNITY. PICK-UP AREA WAS ADJACENT TO DEP END OF RWY 3. WINDS WERE LIGHT AND VARIABLE. PREFERRED RWY FOR WIND UNDER 5 KTS IS RWY 21. UNABLE TO CONFIRM WHETHER WINDS WERE BELOW 5 KTS. RWY HAS 'HUMP' IN THE MIDDLE; OBSTRUCTING LINE-OF-SIGHT VISION OF OPPOSITE END OF RWY; AS WELL AS PREVENTING DIRECT LINE-OF-SIGHT RADIO COMS. PASSIVE 'REPEATER' IS LOCATED AT MID-FIELD; AND I BELIEVED THAT IT WAS EFFECTIVE IN ALLOWING RADIO COMS BTWN ACFT AT OPPOSITE ENDS OF RWY. AS IT TURNED OUT; I WAS WRONG. I BELIEVED THAT IT WAS SAFE TO DEPART RWY 3; WHICH IS A REGULAR OCCURRENCE AT THE ARPT IN CALM OR LIGHT WIND CONDITIONS; AND MADE SEVERAL RADIO CALLS ANNOUNCING MY INTENTION AND LOCATION. DURING THE TKOF ROLL; JUST BEFORE REACHING ROTATION SPD (80 KIAS) THE PAX AND I OBSERVED A SINGLE ENG ACFT TAKING OFF IN THE OPPOSITE DIRECTION APPARENTLY JUST AFTER ROTATION IN FRONT OF US. I PUSHED FORWARD ON THE YOKE TO REMAIN ON THE GND AND THE OTHER ACFT PASSED OVERHEAD AN ESTIMATED 10-20 FT ABOVE US. IT HAPPENED SO FAST THAT I DID NOT EVEN HAVE TIME TO REACT BEYOND PUSHING ON THE YOKE AND DID NOT HAVE TIME TO PULL BACK ON THE PWR BEFORE THE OTHER ACFT WAS PAST. WE CONTINUED OUR DEP AND TOOK OFF WITHOUT FURTHER INCIDENT. WE MADE RADIO CALLS ON THE CTAF AND SPOKE TO THE OTHER PLT; WHO RPTED THAT HE HAD MADE APPROPRIATE RADIO CALLS FROM THE OPPOSITE END OF THE RWY IN PREPARING TO DEPART FROM RWY 21. HE HAD NOT HEARD OUR RADIO CALLS; JUST AS WE HAD NOT HEARD HIS. THE AIRPARK LEADERSHIP IS AWARE OF THE EVENT; AND IS EXPLORING MEASURES TO PREVENT SIMILAR EVENTS IN THE FUTURE; INCLUDING AN 'ACTIVE' REPEATER TO BE SURE RADIO CALLS ARE HEARD AT BOTH ENDS. FOR THE TIME BEING; I WILL HAVE SOMEONE ON THE GND WITH A HANDHELD TRANSCEIVER AT MIDFIELD TO CONFIRM THAT THE OPPOSITE END OF THE RWY IS CLR.