Narrative:

I was cleared by raleigh approach from 7000 to 4000. I had autoplt in descent mode while looking for frequency of FBO. I inadvertently descended to 3300 ft. ATC asked my altitude, then they said to just go ahead and descend to 3000. I was advised to call ATC supervisor on ground. I did and told him what happened.

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Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT IN DSCNT PROC.

Narrative: I WAS CLRED BY RALEIGH APCH FROM 7000 TO 4000. I HAD AUTOPLT IN DSCNT MODE WHILE LOOKING FOR FREQ OF FBO. I INADVERTENTLY DSNDED TO 3300 FT. ATC ASKED MY ALT, THEN THEY SAID TO JUST GO AHEAD AND DSND TO 3000. I WAS ADVISED TO CALL ATC SUPVR ON GND. I DID AND TOLD HIM WHAT HAPPENED.

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.