A PVT PLT OF A PIPER ARROW COMPLAINS OF THE TFC PATTERN FLOWN AND THE RESULTING NMAC WITH A C172 AT L35; CA.

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ON JAN/SAT/02; I WAS ENRTE TO BIG BEAR (L35) FROM CORONA (AJO) WITH RADAR SVC FROM SOCAL FLT FOLLOWING. APPROX 12 MI AT ALT 9500 FT; FROM L35 WAS ADVISED OF CESSNA 172 OFF MY L WING 9 O'CLOCK POS APPROX 1.5 MI SAME ALT. I MADE VISUAL CONTACT. I WAS SW OF L35 AND THE CESSNA WAS NW OF L35; BUT LATER HE WAS COMMUNICATING THAT HE WAS SW OF L35. I ENTERED THE DOWNWIND LEG FOR RWY 26 ACCORDING TO PUBLISHED PROCS. THE CESSNA WAS NOT IN THE PROPER PATTERNS FOR LNDG ON RWY 26; L PATTERN; AT L35. HE WAS N OF THE SHOPPING CTR AND NEARLY OVER THE WESTERLY RED BEACON; COMMUNICATING THAT HE WAS DOWNWIND. I TRIED TO ADVISE HIM THAT HE WAS NOT IN THE PROPER DOWNWIND PUBLISHED PATTERN. HE WOULD NOT ACKNOWLEDGE MY XMISSIONS. I KEPT COMMUNICATING WHERE I WAS AND WHAT MY INTENTIONS WERE. MY SPD WAS GREATER THAN HIS AS I ENTERED THE L BASE LEG FOR RWY 26 (KEEPING MY EYE ON THE CESSNA) SO I THOUGHT THAT HE WOULD NOT BE A FACTOR IN SPITE OF THE FACT THAT HE WAS NOT FLYING IN THE PROPER PUBLISHED PATTERNS. I ENTERED FINAL FOR RWY 26 WHILE HE WAS STILL IN THE IMPROPER DOWNWIND. I WAS ON LESS THAN 1 MI FINAL WHEN HE TURNED HIS BASE LEG (IMPROPER PATTERN). I ADVISED HIM TO LOOK OUT HIS R WINDOW -- HE THEN SAW ME; ACKNOWLEDGED ('I SEE YOU'); AND ABORTED HIS BASE PATTERN COMING WITHIN LESS THAN 200 FT OF ME. DURING THE ENTERING OF THE PATTERNS HE WAS CONCERNED THAT THE UNICOM OPERATOR WOULD CALL A TAXI FOR HIS PARTY OF 3. I BELIEVE THAT 'THIS' WAS ON HIS MIND MORE THAN THE PROPER PATTERNS FOR L PATTERN FOR RWY 26; MUCH LESS LISTENING FOR OTHER TFC IN THE AREA. AFTER LNDG; I DID NOT SEE ANY OF THE OCCUPANTS OF THE CESSNA AS I THINK THE TAXI WAS THERE AND TOOK THEM TO THE VILLAGE. HOWEVER; I NOTED THE SIDE NUMBER AND AFTER ARRIVING HOME INQUIRED ON THE INTERNET AS TO WHOM OWNED THE CESSNA 172RG. ON JAN/MON/02; I CALLED DIRECTORY ASSISTANCE AND COULD FIND NO TELEPHONE NUMBER FOR THE REGISTERED OWNER TO DISCUSS THIS INCIDENT. THEREFORE; I AM FILING THIS RPT.