Narrative:

VFR inbound to st lucie county airport, I was unable to contact tower using communication 2 which worked previously. Assumed tower was closed and proceeded inbound with an uncontrolled field entry, and 1 touch and go, then full stop. On final during second landing, noticed green light from tower. Switched to communication 1 and talked to tower and explained problem. Could have prevented problem by not assuming tower was closed (refer to AFD).

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Original NASA ASRS Text

Title: GA SMA ON A NIGHT TRAINING FLT FAILED TO CONTACT THE TWR FOR LNDG CLRNC. INSTRUCTOR PLT SAYS HE THOUGHT THE TWR WAS CLOSED.

Narrative: VFR INBND TO ST LUCIE COUNTY ARPT, I WAS UNABLE TO CONTACT TWR USING COM 2 WHICH WORKED PREVIOUSLY. ASSUMED TWR WAS CLOSED AND PROCEEDED INBND WITH AN UNCONTROLLED FIELD ENTRY, AND 1 TOUCH AND GO, THEN FULL STOP. ON FINAL DURING SECOND LNDG, NOTICED GREEN LIGHT FROM TWR. SWITCHED TO COM 1 AND TALKED TO TWR AND EXPLAINED PROB. COULD HAVE PREVENTED PROB BY NOT ASSUMING TWR WAS CLOSED (REFER TO AFD).

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.