TFC CONFLICT OCCURRED WHEN AN ARRIVING CESSNA PLT ATTEMPTED TO RECTIFY WRONGFULLY ENTERING A R DOWNWIND; BY PROCEEDING ON THE XWIND TO THE L DOWNWIND IN FRONT OF A DEP.

Narrative

I DEPARTED RWY 33 AT MVY. HEARD TWR WORKING A 'TWIN CESSNA' WHO WAS INSTRUCTED TO RPT L DOWNWIND BUT RPTED R DOWNWIND. AFTER TWR REMINDED HIM THAT HE WAS TO RPT L DOWNWIND; HE WAS TOLD TO CONTINUE; HOWEVER; HE PROCEEDED TO GO FROM R DOWNWIND TO L DOWNWIND OVER THE DEP END OF RWY 33 AND ABOVE ME!' NOTING THIS; I LEVELED OFF AT 300 FT MSL AND TURNED L TO AVOID ANY CONFLICT. KEPT THE TWIN CESSNA VISUAL CONTACT AND PROCEEDED WITH MY CLB WHEN TFC WAS NO LONGER A FACTOR. TWR GAVE HIM A TONGUE LASHING AND INSTRUCTED HIM TO CALL ON THE LAND LINE. FLT PROCEEDED TO DEST WITHOUT INCIDENT. UPON MY RETURN TO MVY A COUPLE OF HRS LATER; SAME CTLR (NOW WORKING GND) ASKED IF I SAW THE TWIN CESSNA. MY REPLY WAS YES AND THAT I TURNED TO AVOID HIM AND THAT HE WAS A REAL 'WINNER.' I REALIZE THAT WE HAVE MASSACHUSETTS DRIVERS IN THE AIR; BUT THIS ONE TAKES THE CAKE. IF I WERE IN A CITATION OR A BARON (FASTER CLBOUT) -- IT COULD HAVE BEEN REALLY INTERESTING AND CLOSE. I HOPE THE PLT OF THE TWIN CESSNA GETS TO DEMONSTRATE HIS FLT PROFICIENCY AND KNOWLEDGE OF AIRSPACE RULES TO THE LCL FAA. HE SOUNDED LIKE AN OLD TIMER WHO GOT HIS LICENSE IN THE DAYS OF 10 HR PVT REQUIREMENTS.