NMAC BETWEEN LNDG SMA AND SMA B ON TKOF ROLL FROM OPPOSITE END OF RWY.

Narrative

IN AN SMA A ON AN IFR FLT PLAN; WE DISCOVERED OUTSIDE THE MARKER THAT THE NDB WAS UNRELIABLE. THIS MAY HAVE LED TO THE FACT THAT ATC DID NOT CLEAR US FOR THE APCH ILS 36 AND HAND US OFF TO LCL FREQ UNTIL AFTER WE WERE INSIDE THE MARKER. AT THIS POINT THE PLT REQUESTED ADVISORY FROM THE UNICOM OPERATOR; GOT NO RESPONSE; AND AT ABOUT 1 1/2 MI FINAL ANNOUNCED THAT WE WERE LNDG ON RWY 36. WE SAW NO TFC ON APCH AND LANDED UNEVENTFULLY. WHILE APPLYING PWR TO TAXI CLR OF THE RWY WE SAW AN SMA B ON TKOF ROLL ON RWY 18; AND QUICKLY TAXIED OFF THE RWY INTO THE GRASS. WHEN WE PARKED WE WERE APCHED BY A MAN WHO IDENTIFIED HIMSELF AS THE FAA ACCIDENT PREVENTION COUNSELOR FOR OXC. HE TOLD US THAT IT IS NEVER CORRECT TO MAKE A STRAIGHT IN APCH AT AN UNCONTROLLED FIELD BECAUSE IT IS NECESSARY TO CIRCLE TO LOOK FOR TFC. I DON'T THINK WE WOULD HAVE DSNDED BELOW CIRCLING MINIMUMS IN SUCH A CASE BECAUSE THE VIS WAS TOO LOW. IN ANY CASE; THE SMA B DIDN'T TAKE THE RWY UNTIL AFTER WE HAD LANDED; SO WE WOULD NOT HAVE SEEN HIM. THE SMA B DEFINITELY DID NOT MAKE A RADIO ANNOUNCEMENT; AND HE SHOULDN'T HAVE BEEN FLYING VFR IN THOSE CONDITIONS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR HAD BEEN CLRED FOR THE ILS RWY 36 APCH BY NYC ARTCC WHICH AT THIS TIME WAS THE CTLING AGENCY FOR THIS NON TWR ARPT. UNICOM DID NOT ANSWER BECAUSE THEY WERE AT LUNCH. THIS RWY IS BUILT OVER A HILL; SO SMA A WAS PROBABLY ON FLARE WHEN SMA B TOOK RWY AT OPP END AND BECAUSE OF HILL IN MIDDLE OF RWY WOULD NOT HAVE BEEN ABLE TO SEE SMA A ON ROLLOUT. FAA ACCIDENT PREVENTION COUNSELOR WAS NOT FAA EMPLOYEE BUT A LCL WHO WAS DESIGNATED TO THIS JOB.