Aircraft
FAA Clears Boeing to Start TIA Phase 4B Testing on 777X
Milestone marks progress in efforts to complete delayed type certification
Boeing 777-9
Stephanie Pope, chief executive of Boeing Commercial Airplanes, said the FAA has cleared the way to start remaining flight tests with the 777-9 aircraft.

Boeing has received Federal Aviation Administration (FAA) approval to proceed with type inspection authorization (TIA) phase 4B certification testing for the 777X, a critical piece of securing type certification of the long-delayed widebody airliner derivative. The milestone was revealed to Leeham News and Analysis in a June 6 interview with Stephanie Pope, chief executive of Boeing Commercial Airplanes.

“This authorization unlocks the largest remaining portion of our flight test with the FAA that we can now go execute," she explained. "It enables further avionics and stability and control testing, as well as human factors flight testing."