2013 the 777X was intruded at the Dubai Airshow and Boeing expected it to enter service by 2020
2020 Congress passed a law imposing new safety standards for cockpit alerts for aircraft certified after December 2022.
June 2021, The Federal Aviation Administration (FAA) sent a letter to Boeing saying that the manufacturer’s new 777X known as the 777-9 aircraft, currently in its testing phase, likely will not receive its certification until mid- to late-2023. The FAA has blocked Boeing from moving forward with a key step in its certification of the aircraft, pushing the projected date on which the FAA will give the aircraft the all-clear back by months.
The FAA is continuing to study the aircraft's Common Core System, described as the "central nervous system of the plane" that the FAA believes is not up to par. The FAA reports that the system has incomplete data and has not cleared preliminary safety checks. The system apparently was not adequately peer-reviewed, resulting in “inconsistencies and incorrect reuse of 787 data.”
<Sigh>
