Complex sentence: It operates scheduled service from its hubs at Portland International Airport (PDX) and Memphis International Airport (MEM) using a fleet of nine-passenger, single engine Pilatus PC-12 aircraft.
Split into simpler sentences: It operates scheduled service from its hubs at Portland International Airport (PDX) and Memphis International Airport (MEM). SeaPort uses a fleet of nine-passenger, single engine Pilatus PC-12 aircraft.