What was found
IAH- DURING FLIGHT 4375, A TEST FLIGHT, THE CREW NOTED THAT THE FLAP ASYMMETRY LIGHT GLOWS THEN THE FLAPS FAIL. MAINTENANCE REMOVED AND REPLACED THE FLAP ANNUNCIATOR PANEL, PERFORMED A OPERATIONAL TEST OF THE FLAP SYSTEM, NO DEFECTS NOTED. A TEST FLIGHT WAS FLOWN, TEST FLIGHT SATISFACTORY AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. THE AIRCRAFT WAS RELEASED FROM TEST FLIGHT.