A PA24 PLT FORGETS TO CANCEL IFR CLRNC.

Narrative

LATE AT NIGHT LEFT CHICAGO; PALWAUKEE ARPT XA00 PM CST OR XB00 AM EST. UNEVENTFUL FLT TO HZY. SET UP GPS RWY 8 APCH. TALKING TO CLEVELAND. CLEVELAND ADVISED TO CHANGE TO LCL FREQ. AT THAT POINT I THOUGHT I HAD BOTH CLEVELAND AND LCL DIALED INTO MY 2 RADIOS AS I TUNED IN HZY 122.8 ON COM #2 AND LEFT CLEVELAND ON COM #1 (DON'T REMEMBER THE FREQ). WHEN I IDENTED THE RWY AT APPROX 800 FT AGL (1725 FT); I ANNOUNCED CANCELLATION OF THE FLT PLAN AND PROCEEDED TO LAND. I; THINKING ABOUT THE EVENT; DON'T RECALL CLEVELAND ACKNOWLEDGING CANCELLATION; WHICH; IN HINDSIGHT; SHOULD HAVE PROMPTED ME TO CALL AGAIN FROM THE AIR OR CALL FSS ON THE GND. INSTEAD; I RECEIVED A CALL AT XF15 AM AT HOME FROM EITHER FSS OR SOME OTHER AGENCY (MY WIFE SAID IT WAS THE FAA. SHE ANSWERED THE PHONE). I EXPLAINED I WAS SURE I HAD CANCELED; BUT PERHAPS THE CANCELLATION WAS NOT RECEIVED. LESSON LEARNED: I WAS NOT TIRED SO THAT IS NO EXCUSE. I GOT PLENTY OF SLEEP THE NIGHT BEFORE THE FLT TO AND FROM CHICAGO IN ANTICIPATION OF THE NEED. THE PRIMARY REASON WAS TO CONFIRM COMPLETE COM WITH ATC OR OTHER ADVISORY SVCS IN ORDER TO ENSURE UNDERSTANDING OF THE PLT'S INTENTIONS.