© History of the Belgian Air Force.

The first five Sikorsky's HSS-1 were delivered from Sud Aviation in 1961 (B4 to B8) to the new heliflight squadron at Koksijde. Later on another seven helicopters came in from Sabena (S-58). Two Sikorsky's served within the Royal Belgian Navy. The Sikorsky's needed some modifications in function of their rescue and transport duties.
During the summer holidays the Sikorsky patrolled along the coastside and realized many rescue missions. In 1974 the heli-flight was renamed into the 40th rescue squadron heliflight. The Sikorsky was replaced by the Westland Seaking  in 1976, but remained in service until 1986.

1. The Sikorsky B-8 of the Royal Belgian Navy. (nowadays the gate guardian of the Koksijde airforce base)
2. The B-4 in flight made his last flight on 05/12/1984.
3. note the OT-ZKF in the middle, this helicopter stays in the Brussels Airforce Museum.
4. The Sikorsky B-4 ( a Hss-1).
5. The B-4 landing on a military transporter truck during an airshow.
6. Showing a rescue-operation during an airshow.

Photos 1-5: C. Vandenbroucke.
Photo 6: J. Alleman.