LYON, France—The Airbus A330neo program is gaining momentum, with the manufacturer recently completing the first flight of the second A330-900 test aircraft and starting the final assembly of the A330-800. The aircraft, registered as F-WTTE, flew Dec. 4 from Toulouse for 4 hr. “It will be dedicated to validating aerodynamic and engine performance, as well as airline operations validation,” Airbus says. The first A330neo flew in October after months of delays. Engine ...