The U.S. Federal Aviation Administration (FAA) has granted approval for Boeing to advance its long-delayed 777-9 aircraft model to the fourth phase of airworthiness certification testing, according to Jin10. This decision, made on March 17, marks a significant step forward for Boeing as it seeks to finalize the certification process for the 777-9, a key component of its long-haul fleet strategy. The 777-9 model has faced multiple delays, impacting Boeing's timeline for delivery and market entry. The FAA's approval is expected to accelerate the testing process, bringing Boeing closer to commercial deployment of the aircraft.