What was found
HELICOPTER EXPERIENCED 3 ENGINE FLAME-OUTS WITHIN APPROXIMATELY 5 MINUTES. THE AUTO RE-IGNITION STARTED THE ENGINE IN-FLIGHT EACH TIME. NORMAL LANDING WAS ACCOMPLISHED. A COMPLETE INSPECTION OF THE FUEL SYSTEMS, CONTROL SYSTEMS, FUEL FILTERS, AIR FILTERS, FUEL NOZZLE, FUEL CONTROL, GOVERNOR, FUEL PUMPS, FUEL VENTS. GROUND RAN AND TEST FLOWN FOR 4 HOURS WITH NO MALFUNCTIONS. COULD NOT FIND A CAUSE FOR THE FLAME-OUTS.