Callsign confusion involving a Beech Aircraft Corp 58, VH-KEW and Beech Aircraft Corp 58, VH-WLC, Brisbane, QLD on 19 November 1992

The pilot of VH-WLC used the wrong callsign when commencing to taxi (ie. VH-KEW). He changed to the correct callsign when ready to take off, and advised ATC. The controllers had strips for both callsigns and changed the callsign on the strips initially used instead of changing strips. As a result, ATC had the aircraft route and altitude incorrect. Calls made by the pilot after take off were mis-heard by the controllers.