It began replacing leased equipment with its own aircraft in 1971, acquired its own air operator's certificate in June 1972 in the name of International Aviation Services (UK) Ltd and adopted the IAS Cargo Airlines trading name four years later.
In 1971, it began using its own aircraft instead of leased equipment; in June 1972, it obtained an air operator's certificate under the name of International Aviation Services (UK) Ltd. Four years later, it adopted the IAS Cargo Airlines trade name.