CAC Wirraway

Wirraway
General information
Type	Trainer/general purpose
Manufacturer	Commonwealth Aircraft Corporation
Primary users	Royal Australian Air Force Royal Australian Navy
Number built	755
History
Manufactured	1939–1946
Introduction date	1939
First flight	1937 (see Development)
Retired	1959
Developed from	North American NA-16
Developed into	CAC Boomerang

The CAC Wirraway is a training and general purpose military aircraft manufactured in Australia by the Commonwealth Aircraft Corporation (CAC) between 1939 and 1946. It was an Australian development of the North American NA-16 training aircraft. The Wirraway has been credited as being the foundation of Australian aircraft manufacturing.^[1]

When the name was announced on 6 April 1938, it was said to be "an Aboriginal word meaning challenge".^[2] The word presumably comes from Daniel Bunce's compilation Language of the Aborigines of the colony of Victoria, where Wirraway is glossed 'challenge; dare, to defy; incite, to stir up; menace, to threaten'.^[3]

During the Second World War, the Royal Australian Air Force (RAAF) deployed a number of Wirraways into combat roles, where they served in a light bomber/ground attack capacity, striking against the advancing forces of the Empire of Japan. While the type had been primarily used as a general purpose aircraft, being present in small quantities within the majority of front-line squadrons for these purposes, the aircraft was often pressed into combat when required. Typically, fighter versions of the Wirraway were operated over theatres such as New Guinea to perform ground attack missions and other Army co-operation tasks over extended periods until more advanced aircraft had become available in sufficient quantities. On 12 December 1942, the Wirraway achieved its only shoot-down of an enemy aircraft—thought to be a Mitsubishi A6M Zero at the time, but later determined to be a Nakajima Ki-43 Hayabusa^[4]—while flown by Pilot Officer John S. "Jack" Archer.

Following the end of the conflict, the Wirraway was operated for over a decade as a trainer by the RAAF, the newly formed RAN Fleet Air Arm, and the squadrons of the Citizen Air Force. During 1957, the last of the RAN's Wirraways was retired, having been replaced by the newer jet-powered de Havilland Vampire; as the CAC Winjeel came into squadron service, the RAAF phasing out its remaining fleet of Wirraways during the late 1950s. Officially, the last military flight to be performed by the type was conducted on 27 April 1959. Notably, the Wirraway had also functioned as the starting point for the design of a wartime "emergency fighter", which was also developed and manufactured by CAC, known as the Boomerang.