Together with HKP-3B (based on the Agusta Bell 204) 03302/42 and 03313/53 and HKP-4A 04454/94. Also present on the apron (but not visible in this photo) are H-209 & H-213 (Hughes 369D, callsign DAF3470), T-410 & T-418 (T-17, callsign DAF 3472), HKP-6B (based on the Bell 206) 06050/50 and HKP-9 (based on the Bolkow 105) (V73)/73. The Bolkow was c/n S-593 and on trial for the Försökcentralen. It resulted in an order for several aircraft. Many thanks to Bert V. for the info. Photo from Harm Reinders

Wearing its attractive splinter camouflage, the Hkp4 was primarily used in the Anti-Submarine Warfare and Search And Rescue roles by both the Flygvapnet and the Marinflyget from 1963 until 2011 when it was retired from active service.

Seen performing at the Swedish Air Force Airshow at Ronneby. Now nearing retirement, only a handful of these helicopters remain in service.

Licence-built version of the Boeing CH-46 Sea Knight on show at the Swedish Air Force Air Show.

A very rare visitor to the UK, this was in the static park at the Army Air Corps' 1984 Open Day.

A lumbering two-seat patrol seaplane built by the Swedish Thulin company, the Type G first flew in 1917 and top speed was just 118 km/u (73 mph).

The Piasecki H-21 Work Horse, or Flying Banana, was delivered to Sweden as the Vertol 44 from 1958. Receiving the local designation Hkp1, the type was used mainly by the Marinen (Navy) for transport, rescue, anti-submarine and minesweeping duties.