Thijs Postma - Poster - CA-13 Boomerang On Patrol - Metal FrameSee these CA 13 Boomerangs of the Royal Australian Air Force on a mission in July 1944. The no. 5 squadron is attacking a Japanese stand. A Wirraway reconnaissance aircraft teased the Japanese to open fire to disclose their positions. Here you can see the BF S, with number A46 126 and name Sinbad II. The Boomerang was a mix of parts of a Harvard trainer and the engine of the Beaufort bomber.