Narrative:

While en route from mlb to sua I monitored the ATIS and was with ZMA at 5500 ft. I began my descent to pattern altitude and terminated radar service. At that time I glanced at the sectional and dialed in sua tower. I contacted the tower 7 NM to the north. The tower I was really talking to was ft pierce. I did not realize it until I was downwind and looked again at the frequency. I believe I made the mistake when I was switching from ZMA to the tower.

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Original NASA ASRS Text

Title: PA28 PLT ENTERS SUA ATA WITHOUT CLRNC.

Narrative: WHILE ENRTE FROM MLB TO SUA I MONITORED THE ATIS AND WAS WITH ZMA AT 5500 FT. I BEGAN MY DSCNT TO PATTERN ALT AND TERMINATED RADAR SVC. AT THAT TIME I GLANCED AT THE SECTIONAL AND DIALED IN SUA TWR. I CONTACTED THE TWR 7 NM TO THE N. THE TWR I WAS REALLY TALKING TO WAS FT PIERCE. I DID NOT REALIZE IT UNTIL I WAS DOWNWIND AND LOOKED AGAIN AT THE FREQ. I BELIEVE I MADE THE MISTAKE WHEN I WAS SWITCHING FROM ZMA TO THE TWR.

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.