Koksijde Air Base (ICAO: EBFN) is a Belgian Air Component facility in Koksijde, Belgium. 40 sqn operating 5 Westland Sea King Mk.48 helicopters for search and rescue (SAR) duties. Also based at Koksijde Air Base are Aérospatiale Alouette III helicopters. The Westland Sea King Mk.48 helicopters will be replaced with NH90 NFH helicopters starting in March 2012.It features two airframes as gateguard: a Hawker Hunter F.4, and a Sikorsky S-58C, both ex-Belgian Air Force.