Complex sentence: The first 6 aircraft were delivered, but with the early loss of one of them, the rest were transferred to a maritime patrol role due to their inefficiency in combat, the program was cancelled for the rest of the aircraft.
Split into simpler sentences: The first 6 aircraft were delivered, but with the early loss of one of them, the rest were transferred to a maritime patrol role due to their inefficiency in combat. The program was cancelled for the rest of the aircraft.