Complex sentence: The orders were followed by and option for (8) additional Corvette SN-601, serial 200d models and finally in 1974 Air Alpes entered the jet age with the arrival of the Aerospatiale Corvette series 100.
Split into simpler sentences: The orders were followed by and option for (8) additional Corvette SN-601, serial 200d models. In 1974 Air Alpes entered the jet age with the arrival of the Aerospatiale Corvette series 100.