 In October 1991 Columbia Helicopters bought four Boeing Vertol 107II-14 from the Swedish Government, all formerly operated by the Swedish Air Force as the HKP 4A.In December 2012 Columbia bought four Boeing Vertol 107II-14s (originally Swedish Air Force HKP 4As, modified from 1988 to 1991 to Swedish Navy standards as HKP 4Ds), two Boeing Vertol 107II-15s (HKP 4Bs) and four Kawasaki KV-107IIA-16s (HKP 4Cs) from the Swedish Government, all ten formerly operated by the Swedish Navy.In 2014, Columbia bought five US Army Chinooks for utility service, as they are not allowed to carry passengers.