A CHEROKEE 180 SINGLE PLT EXPERIENCED AN NMAC AT AN UNCTLED FIELD; HQZ; WHILE ON FINAL APCH WITH A C150.

Narrative

I MADE A 10 MI CALL INBOUND TO HQZ; A CALL ON THE 45 DEG ENTRY TO L DOWNWIND FOR RWY 17; A DOWNWIND CALL; A BASE LEG CALL; AND A CALL TURNING TO FINAL FOR RWY 17. AS I WAS ENTERING THE 2 MI; 45 DEG ENTRY FOR THE L DOWNWIND; I HEARD 2 OTHER ACFT ON FREQ. ONE WAS XING MIDFIELD TO ENTER THE L DOWNWIND FOR RWY 17; AND THE OTHER ACFT MADE A CALL FOR A STRAIGHT-IN APCH FOR RWY 17. I CONTINUED TO LOOK FOR THESE ACFT; BUT NEVER SPOTTED THEM. I EXTENDED MY DOWNWIND OUT TO HWY 80 (APPROX 2 MI BEYOND THE TOUCHDOWN POINT) WHILE I WAS LOOKING FOR THE OTHER TFC. I TURNED L ON THE BASE LEG; AND MADE MY CALL ON THE UNICOM FREQ WHILE STILL LOOKING FOR CONFLICTING TFC. I STILL DID NOT SEE THE OTHER ACFT; POSSIBLY DUE TO THE SETTING SUN IN THE W BEING IN MY EYES. I DID NOT HEAR ANY OTHER CALLS FROM THE OTHER ACFT AFTER STARTING THE 45 DEG ENTRY LEG. I MADE MY CALL FOR FINAL TO RWY 17 IN THE TURN. SHORTLY AFTER ROLLING OUT ON FINAL; THERE WAS AN EMER CALL FROM A C150 TRAINING ACFT THAT WAS 50 FT ABOVE ME ON FINAL. I IMMEDIATELY MADE A L 360 DEG TURN TO CLR FINAL AND RETURN FOR A FULL-STOP LNDG. AT NO POINT DID I SEE EITHER OF THE OTHER ACFT IN THE PATTERN EVEN THOUGH I WAS CONSCIOUS THAT THEY WERE THERE SOMEWHERE AHEAD OF ME; AND I WAS LISTENING INTENTLY FOR THEIR RADIO CALLS. FAR; AIM PROCS; AND SEE-AND-AVOID TECHNIQUES WERE FOLLOWED THROUGHOUT THE ENTIRE TIME. HUMAN PERFORMANCE CONSIDERATIONS INCLUDE: THE LOW SUN IN THE W MADE IT DIFFICULT FOR ME TO SPOT OTHER ACFT; THE NON-STANDARD ENTRY MADE BY THE ACFT MAKING THE STRAIGHT-IN APCH TO THE RWY CONTRIBUTED TO THE CONFLICT IN TFC; THE OTHER ACFT WERE NOT MAKING SUFFICIENT POS RPTS TO INDICATE WHERE THEY WERE IN THE COURSE OF THEIR APCHS. NEXT TIME; BEFORE I MAKE MY TURN TO BASE LEG OR FINAL; I WILL QUERY THE OTHER PLTS TO CONFIRM THEIR POS WHEN I AM UNABLE TO SPOT WHERE THEY ARE.