Boeing’s 747-8 Intercontinental jet successfully completed its first certification test flight with a package of performance improvements, including enhanced engines.
The package is designed to improve fuel efficiency.
The flight took off from Paine Field in Everett, Wash., this week and flew for four hours.
“It was a great flight and the engines performed as expected, Capt. Kirk Vining said in a statement. “This is an important milestone for the flight test program.”
The plane’s Performance Improvement Package includes improvements to the engines and flight management computer software.