Ⅱ. Main Engine Fuel Booster Pump Plunger Failure

摘要

When the main engine was tested after drifting, Fuel Plunger Not Return Alarm was activated. The crew tried to start the engine several times, but the engine could not be started. The main engine booster pump suction valves and the position sensors were inspected, but all were well. Further inspection revealed that all the plungers of the main engine booster pumps were stuck.