Frontier Airlines Flight Returns To Denver After Unruly Passenger Attempts To Open Door Inflight

While Airbus and Boeing are very much planemakers, there are many components on their aircraft that are not produced by them: This includes avionics and, of course, cabin seating. But the aircraft engines also come from external suppliers – and so delays can really impact the final assembly and delivery process.And, well, Airbus’ CEO has disclosed that there are dozens of Airbus jets assembled but waiting for engines.