Boeing announced this morning that it completed the first engine runs for the 747-8 Freighter as the program inches closer to first flight, expected next month. “We are very pleased with the engines’ performance during this test,” said Mo Yahyavi, vice president and general manager of the 747 program. “The engines and all the systems performed as expected."
Engine runs began slightly before 10 a.m. PST yesterday. The test involved starting the engines and operating them at various power settings to ensure all systems perform as expected. The test began with the auxiliary power system providing power to start the first of four General Electric GEnx-2B engines. Engineers started the remaining three engines using the cross-bleed function.
Basic systems checks continued throughout the test. The team completed a vibration check and monitored the shutdown logic to ensure it functioned as expected. “This milestone is an exciting one for the GEnx-2B team and we anticipate the engines will continue the same high performance that we have experienced in our ground and flight tests,” said Tom Brisken, general manager of the GEnx program at GE Aviation.