Thai Airways International started operations in 1960 as a joint venture between SAS and the Thai government to create an international airline for the nation.
Initial operations (to nine Asian destinations) were with SAS DC-6s however in mid 1962 a single CV-990 was leased from SAS and became ‘Srisuriyothai’. SAS was one of the original customers for the troubled CV-990 however they were forced to cancel their orders due to financial difficulties as opposed to performance issues. Instead they leased a pair of CV-990s from Swissair direct from the production line for operation on the Copenhagen-Tokyo route.
Other aircraft leased in from SAS included 6 Caravelle IIIs (1963-1970), 2 DC-9-41s (1970-1972).