Boeing 777X test aircraft [Courtesy: AirlineGeeks/William Derrickson]
Key Takeaways:
Boeing has reactivated its fourth 777X testbed aircraft (WH004) after a hiatus since late 2021, bringing all four test airplanes to concurrent active status for the first time in years.
The WH004 aircraft is uniquely configured with a full passenger interior, dedicated to cabin-specific evaluations like environmental control and interior noise levels.
This reactivation is part of Boeing's intensified efforts to ramp up 777X flight testing ahead of FAA certification, having completed over 1,400 flights and nearly 4,000 flight hours to date.
Boeing has over 520 orders for the 777X variants and is targeting the delivery of the first 777-9 in 2026.
Boeing has reactivated its fourth 777X testbed aircraft, designated WH004, marking its return to flight operations for the first time since late 2021.
The aircraft took off from Paine Field (KPAE) in Everett, Washington, on Wednesday. Following this flight, all four 777X test airplanes are now concurrently active, a milestone not achieved since 2021.
CREATE A FREE ACCOUNT
Sign up to keep reading
Create a free account to continue. Already a member? Sign in below.
Ryan is Group President for Firecrown's Aviation Group. In 2013, he founded AirlineGeeks.com, a leading trade publication covering the airline industry. Since then, his work has been featured in several publications and news outlets, including CNN, WJLA, CNET, and Business Insider. During his time in the airline industry, he's worked in roles pertaining to airport/airline operations while holding a B.S. in Air Transportation Management from Arizona State University along with an MBA. Previously, he worked for a Part 135 operator and later a major airline. Ryan is also an Adjunct Instructor at Embry-Riddle Aeronautical University.
