Complex sentence: Bjarni Tryggvason has about 4,000 hours of flight experience, holds an Airline Transport Rating and has been a flight icurrently active in aerobatic flight and once qualified as captain in the Tutor jet trainer with the Canadian Air Force.
Split into simpler sentences: Bjarni Tryggvason has about 4,000 hours of flight experience, holds an Airline Transport Rating and has been a flight instructor. He's currently active in aerobatic flight and once qualified as captain in the Tutor jet trainer with the Canadian Air Force.