This glider, once owned and operated by the Air Training Corps (ATC), is one of only four examples on public display around the world.

The Ka-4 was designed by Rudolph Kaiser and manufactured by Alexander Schleicher Sailplanes in Germany during the 1950s. ZK-GBQ arrived in New Zealand in 1958, having been purchased by the Tauranga Gliding Club. It was sold to the Waipukurau Gliding Club in 1969, and in 1975, the Hastings Division of the Air Force Association purchased it for No. 11 Squadron ATC.