Several months passed before the RAAF committed to the type, partly because for a time it appeared that the organisation's training needs could be met with other types already being procured. However, RAAF Specification 1/40 for the "Supply of CAC Wackett..." was eventually issued in August 1940 and the Wackett entered production. The first CA-6 Wackett recorded its first flight on 6 February 1941 and entered service in March that year. Supplies of Hamilton Standard 2B20 propellers, which were being manufactured locally by de Havilland Australia, and the Scarab engines, were erratic during the first half of 1941. The propeller supply problem was not fully resolved until October of that year, so many unflyable aircraft accumulated at the CAC factory at Fisherman's Bend. However, during this time the opportunity was taken to incorporate modifications to the thickness of the lower wing skins that in-service use had shown were required. Following the outbreak of the Pacific War production was increased to make way for the Boomerang and the last Wackett was delivered to the Royal Australian Air Force on 22 April 1942.