Narrative:

I was highly focused on ILS to 300 ft ceiling and 2 mi visibility at sna. Frequency with socal approach was busy. Concerned about wake turbulence from preceding B757. I either did not receive a call to switch to tower or didn't hear the call. If I missed the call, I did not receive a call back. Being focused on the gauges, I did not have presence of mind to ask approach for switch to tower. It did not even occur to me that I was not with tower and cleared. I broke out at minimums, looked up, and landed, thinking I was cleared. Not until rollout did I realize I was still on approach. I believe I can correct this by adding a 'C' to my outer marker 'gump' check. Gas, undercarriage, mixture, propellers, 'clearance.'

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Original NASA ASRS Text

Title: A C320 PLT LANDED WITHOUT CLRNC TO LAND. PLT DOES NOT REMEMBER RECEIVING A CALL TO CONTACT THE TWR. UNAUTH LNDG.

Narrative: I WAS HIGHLY FOCUSED ON ILS TO 300 FT CEILING AND 2 MI VISIBILITY AT SNA. FREQ WITH SOCAL APCH WAS BUSY. CONCERNED ABOUT WAKE TURB FROM PRECEDING B757. I EITHER DID NOT RECEIVE A CALL TO SWITCH TO TWR OR DIDN'T HEAR THE CALL. IF I MISSED THE CALL, I DID NOT RECEIVE A CALL BACK. BEING FOCUSED ON THE GAUGES, I DID NOT HAVE PRESENCE OF MIND TO ASK APCH FOR SWITCH TO TWR. IT DID NOT EVEN OCCUR TO ME THAT I WAS NOT WITH TWR AND CLRED. I BROKE OUT AT MINIMUMS, LOOKED UP, AND LANDED, THINKING I WAS CLRED. NOT UNTIL ROLLOUT DID I REALIZE I WAS STILL ON APCH. I BELIEVE I CAN CORRECT THIS BY ADDING A 'C' TO MY OUTER MARKER 'GUMP' CHK. GAS, UNDERCARRIAGE, MIXTURE, PROPS, 'CLRNC.'

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.