NMAC BY 2 PVT ACFT ON FINAL APCH AT A NON CTLED ARPT.

Narrative

CONTACTED UNICOM (122.8) 15-20 MI OUT (BASED ON LORAN) AND WAS ADVISED RWY 24L TFC IN USE AND CAUTION FOR NUMEROUS ACFT IN AREA. RPTED POS TWICE ON 45 DEGS TO DOWNWIND; ONCE ON DOWNWIND; BASE; AND FINAL TURNS. COMMUNICATED WITH DEPARTING ACFT ON XWIND WHILE ENTERING PATTERN ON 45; AND ALSO MONITORED RADIO CALLS FROM ACFT INBOUND FROM N. NO OTHER RADIO CALLS FROM OTHER ACFT WERE APPARENT. JUST PRIOR TO TURNING FINAL; CHKED FOR TFC TO R ON FINAL APCH PATH AND SAW NONE. ON SHORT FINAL ANOTHER SMA APPEARED IMMEDIATELY OVERHEAD THROUGH WINDSHIELD (ESTIMATED 25-50 FT ABOVE OUR ACFT) AND PROCEEDED TO LAND AHEAD OF US; REQUIRING US TO EXECUTE EVASIVE ACTION AND GAR (WHICH APPEARED MARGINAL DUE TO 'DIRTY' GEAR DOWN; FULL FLAP LNDG; CONFIGN AND RISING TERRAIN IN DIRECTION OF FLT -- FIELD ELEVATION 5200 FT). AT NO TIME DID EITHER OF US CATCH EVEN A GLIMPSE OF THIS ACFT PRIOR TO THE TIME IT APPEARED IN OUR WINDSHIELD; NOR WERE ANY RADIO CALLS FROM ACFT Y OR OTHER ACFT HEARD; AND HOW THIS ACFT ENTERED THE PATTERN IS UNKNOWN. AFTER REENTERING THE PATTERN AND EXECUTING A NORMAL LNDG; WE FOLLOWED THE PATH OF THE OTHER ACFT; WHICH HAD TAXIED TO A REMOTE HANGAR AT THE FAR END OF THE FIELD; TO DISCUSS THE INCIDENT WITH THE OTHER PLT. HOWEVER; NO ONE WAS FOUND IN THE VICINITY OF THE ACFT. EXAMINATION OF THE ACFT REVEALED THE PANEL VIRTUALLY DEVOID OF INSTS; EMPTY CTR STACK NAV/COM RACK; BACK SEATS MISSING; ETC. ALL IN ALL; THE ACFT APPEARED TO BE AN UNAIRWORTHY DERELICT. WE WERE ADVISED BY OTHER LCL PLTS THAT THE ACFT HAD BEEN FLOWN BY AN EXPERIENCED AIRLINE PLT WHO FERRIED SUCH ACFT AS A SIDE LINE. WHETHER THE ACFT HAD A VALID FERRY PERMIT IS UNKNOWN. RECOMMEND FARS RELATIVE TO FERRYING UNAIRWORTHY OR MARGINALLY AIRWORTHY; OUT-OF-LICENSE ACFT AND MINIMUM CREW/EQUIP REQUIREMENTS AND IMPLEMENTATION OF SUCH BY FAA INSPECTORS BE REVIEWED TO PRECLUDE SUCH OPS CREATING HAZARDS FOR OTHER ACFT/AIRMEN OPERATING BY APPLICABLE FARS. WE UNDERSTAND THE PLT OF THE OTHER ACFT INVOLVED IN THIS INCIDENT WAS A FATALITY IN AN ACCIDENT IN COLORADO THE FOLLOWING DAY; PRESUMABLY IN THE SAME ACFT. WHETHER ANY OTHER ACFT OR INDIVIDUALS WERE INVOLVED AND WHETHER THERE WERE ANY SIMILARITIES TO OUR INCIDENT ARE NOT KNOWN.