ALTDEV ALT OVERSHOT IN CLB.

Narrative

WHEN I REQUESTED THE CLRNC FROM ORLANDO CLRNC; I WROTE DOWN AND READ BACK INITIAL ALT OF 15000 FT. I SET 15000 FT IN THE ALT PRESELECT WINDOW. THERE WAS NO OTHER CREWMEMBER IN THE COCKPIT AT THE TIME. PRIOR TO TKOF I BRIEFED THE PNF OF AN INITIAL ALT OF 15000 FT. DURING THE CLB THROUGH 2500 FT WE SWITCHED TO DEP CTL. AT THAT TIME HE SAID 'STOP AT 3000 FT.' WE ACCOMPLISHED THAT WITH A SLIGHT DEV ABOVE 3000 FT. AT THAT TIME THE DEP CTL SAID THAT OUR CLRNC WAS INITIALLY TO 1500 FT. THE 2 THINGS THAT I LEARNED TO DO TO PREVENT THIS SIT FROM OCCURRING AGAIN IS TO WAIT UNTIL THERE ARE 2 PLTS LISTENING TO THE CLRNC AND TO THINK ABOUT WHAT OTHER ARPTS ARE IN THE AREA AND TO SEE IF AN ALT IS APPROPRIATE TO THE AREA. IF NOT; THEN QUESTION IT. PDC COULD ALSO PREVENT THIS FROM HAPPENING. SUPPLEMENTAL INFO FROM ACN 298570: CLRNC DELIVERY CTLR DID NOT DETECT ERROR IN READBACKS. CREW BRIEFED DEP BEFORE TKOF AND WERE CONFIDENT WE KNEW WHAT WE WERE EXPECTED TO DO. NEXT TIME: BOTH CREWMEMBERS IN COCKPIT DURING CLRNC RECEIPT AND READBACK; CTLR SHOULD HAVE DETECTED ERROR IN READBACK.