A C150 PRACTICING A BKV 9 LOC APCH HAS AN NMAC WITH A PA31 WHO WAS NOT ON BKV CTAF.

Narrative

I WAS ABOUT 1/2 WAY THROUGH MY TURN TO TRACK THE LOC FOR RWY 9 BKV FROM THE S. I WAS MONITORING THE BKV CTAF ON 123.0. AT THIS POINT; I SUDDENLY HAD A WINDSHIELD FULL OF PIPER NAVAJO THAT APPEARED APPROX 200-300 FT ABOVE ME MAKING A TURN ONTO THE SAME LOC FROM THE N. HE PROCEEDED AHEAD OF ME AND I SLOWED; WHICH WAS PROBABLY NOT NECESSARY. I DID NOT HEAR HIM ON THE RADIO. WE BOTH PROCEEDED ON THE LOC. HE WAS MOVING WAY AHEAD OF ME ON IT. I HEARD 1 CALL FROM HIM ON THE CTAF THAT HE WOULD MAKE (I THOUGHT) A FULL STOP FROM HIM. DURING THIS TIME; THERE WERE OTHER PLANES IN THE PATTERN AT BKV. A CESSNA WAS DOWNWIND; THEN BASE; AND TURNED FINAL IN FRONT OF THE NAVAJO AND LANDED AS THE NAVAJO PROCEEDED TO GO MISSED; ABOVE THE LANDED CESSNA. I DID NOT SEE THE NAVAJO LAND AND DID NOT SEE HIM AFTER HE WENT MISSED. IT WAS OBVIOUS THAT WE APCHED THE LOC FOR A PRACTICE APCH AT THE SAME POINT IN TIME AND (NEAR) SPACE. SINCE I WAS NOT ON APCH FREQ; I DON'T KNOW IF HE WAS EITHER; SO I DON'T KNOW IF HE WAS GETTING TA'S OR APCH CTL INSTRUCTIONS. HE MAY HAVE JUST BEEN TRACKING THE LOC FOR PRACTICE LIKE I WAS. IT WAS DISTURBING THAT HE ONLY MADE 1 CALL ON HIM. IT APPEARED THAT THE CESSNA DID NOT HEAR HIS SINGLE CALL ON THE FREQ. AS FOR MY PART; I SHOULD HAVE AT LEAST BEEN MONITORING APCH IF NOT TALKING TO THEM WHILE DOING THIS MANEUVER. SINCE THE PLANE I WAS FLYING HAD A MISSING HUNDREDTH DIGIT ON THE SINGLE RADIO; I FELT MORE COMFORTABLE JUST STAYING ON THE CTAF INSTEAD OF CHANGING FREQS AND TRYING TO GUESS WHETHER I WOULD BE BACK ON CTAF WHEN THE TIME CAME; SO THIS WAS A FACTOR IN THIS EVENT.