Complex sentence: The first jet in the fleet of Sadia, a British Aircraft Corporation One-Eleven entered service on September 17,1970 and in 1972 the name of the airline was changed to Transbrasil S/A Linhas Aéreas and headquarters moved to Brasília.
Split into simpler sentences: The first jet in the fleet of Sadia, a BAC One-Eleven entered into service on September 17,1970. In 1972 the name of the airline was changed to Transbrasil S/A Linhas Aéreas and its headquarters were moved to Brasília.