Complex sentence: Using a Boeing 727 airplane, the airline operated also an international service between Kiritimati and Honolulu, United States, and between Tarawa and the Tuvaluan capital Funafuti, the latter being operated using a de Havilland Heron aircraft.
Split into simpler sentences: Using a Boeing 727 airplane, the airline operated a service between Kiritimati and Honolulu, United States. The route between Tarawa and the Tuvaluan capital Funafuti was operated using a de Havilland Heron aircraft.