Boeing 777X Certification Delayed to 2027 Amid GE9X Engine ScrutinyBoeing's 777X program faces a delayed entry into service, now targeted for 2027, due to certification hurdles and technical issues with its GE9X engine.Feb 26, 2026•4 min•Boeing 777XGE9XFAAAircraft CertificationWidebody AircraftREGULATORY