A Kalkara (aboriginal for storm bird) unmanned aerial target successfully flew mission 100 on 27 March 2006 (from Gilbert Point at HMAS Stirling) and despite having been in use for a number of years, providing aerial targets to ships and aircraft missile systems, the Kalkara unmanned aerial target system did not achieve operational release until 10 August 2006 despite the first flight having taken place on 19 June 1998. 21 target aircraft were produced (Serial numbers N28-001 to N28-021) and it was phased out of service in 2008.