The U.S. Federal Aviation Administration (FAA) on Tuesday approved the Boeing 737 Max 10, the last model in the Boeing 737 Max family to receive government approval. The aircraft was originally scheduled to enter service in 2020, but certification was delayed for years due to scrutiny following two crashes in 2018 and 2019, as well as engineering changes such as to the anti-icing system. Max 10 orders account for approximately 30% of Boeing's backlog. The FAA had reviewed navigation system malfunctions on the aircraft prior to approval but determined they did not affect flight safety.