Sempati Air was an airline based in Indonesia. Partially owned by friends and family of President Suharto of Indonesia, the airline folded due to bankruptcy after his May 1998 resignation. Its IATA Code has since been reassigned to SpiceJet.

Sempati Air (IATA code: SG; ICAO code: SSR; call sign: Spirow) was founded in December 1968 by PT.Tri Utama Bhakti (PT.Truba) under the name PT Sempati Air Transport and began flights in March of the following year using Douglas DC-3 aircraft. In the beginning, the airline did not offer regularly scheduled services; instead it offered transportation for oil company workers, but soon thereafter more DC-3s were purchased and the airline received a number of Fokker F27s, and regularly scheduled flights to Singapore, Kuala Lumpur and Manila were begun. The name Sempati was taken from Sampati, a mythical bird in Hindu mythology. In its early days, Sempati were referred by some people as "Sembilan Panglima Tinggi" (nine senior commanders) the Indonesian Army Strategic Reserve Command was also involved in its operations.

In 1975, a Boeing 707 was leased from Pelita Air for flights between Denpasar and Tokyo but the route was turned over to Garuda Indonesia by the Indonesian government. After 1977, the DC-3s were phased out in favor of the newer, more modern F27s. After this, the airline was unable to acquire other types of aircraft as the government placed restrictions on private airlines buying new equipment and it was not until the mid-to-late 1980s that the Fokker 100 and the Boeing 737-200 were introduced into the fleet.

...
Wikipedia