A C182 PLT RPTS AN NMAC IN THE HEZ TFC PATTERN WITH ANOTHER C182 PLTED BY A CFII NOT ATTENTIVE TO LCL TFC PATTERN CALLS.

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WHILE APCHING THE PATTERN AT NATCHEZ (HEZ) I HAD AN NMAC WITH ANOTHER SKYLANE IN THE PATTERN. I HAD BEEN HANDED OFF BY ZHU APPROX 20 NM SE OF THE FIELD; AND PLANNED TO ENTER L DOWNWIND FOR RWY 18. I CALLED FROM 10 MI; 'NATCHEZ TFC; SKYLANE X; 10 MI SE; L TFC FOR RWY 18; FULL STOP; NATCHEZ.' THERE WAS NO RESPONSE AND I CONFIRMED I WAS ON FREQ AND DID A SQUELCH CHK ON THE RADIO. AT PERHAPS 5 MI; I CALLED AGAIN WITH THE SAME AND ALSO HAD NO RESPONSE. AT PERHAPS 1 MI; I CALLED THAT I WAS ON A 45 DEG ENTRY FOR THE L DOWNWIND FOR RWY 18; ALSO WITHOUT RESPONSE. JUST AS I WAS ABOUT TO TURN TO INTERCEPT THE DOWNWIND; I SAW ANOTHER SKYLANE AT MY ALT ON THE DOWNWIND FOR RWY 18 AND I EXPECT LESS THAN 200 FT AWAY; CONVERGING FROM MY L. I DOVE AND BANKED R SHARPLY TO AVOID HIM; LEVELED OFF; THEN TURNED L TO THE S DIRECTLY OVER RWY 18 AND BEGAN CLBING BACK TO PATTERN ALT. AFTER THE MANEUVER; I COULD NO LONGER SEE THE AIRPLANE. I CALLED 'SKYLANE IN THE PATTERN; DO YOU HAVE ME OVER THE FIELD?' AND HEARD NO RESPONSE. I REPEATED THE CALL AND ASKED IF HE COULD SEE ME OVER THE RWY. HE REPLIED 'I SEE YOU NOW!' I ASKED WHY HE WAS NOT USING HIS RADIO TODAY; TO WHICH HE DID NOT REPLY. I RETURNED TO THE L DOWNWIND LEG TO FOLLOW THE SKYLANE WHO HAD NOT DEVIATED FROM THE DOWNWIND AND LANDED WITHOUT INCIDENT. I WAS GREETED ON THE GND BY LINEMEN WHO HAD HEARD THE EXCHANGE AND SAID THE SAME LCL PLT HAD BEEN IN AN NMAC EARLIER THAT WK FOR NOT COMMUNICATING; REQUIRING ANOTHER AIRPLANE TO ABORT DURING TKOF ROLL. I SPOKE WITH THE PLT; A CFII WHO HAD BEEN INSTRUCTING TOUCH-AND-GOES AT THE TIME; WHO CONFIRMED HE WAS ON FREQ BUT HAD NOT BEEN ATTENTIVE TO MY CALLS; AND FELT HE HAD DONE NOTHING WRONG SINCE THE CFR'S DO NOT REQUIRE USE OF THE RADIO. INDEED; PER THE CFR'S NO RADIO IS REQUIRED FOR THESE OPS; AND I SHOULD HAVE DONE A BETTER SCAN FOR TFC IN BLIND SPOTS WHILE APCHING THE PATTERN. HOWEVER; I THINK THAT IT IS EQUALLY IMPORTANT THAT ANY PLT IN THE PATTERN WITH A RADIO LISTEN ATTENTIVELY AND RESPOND TO APCHING TFC.