What was found
LEFT AND RIGHT ENGINE SYSTEM FAIL ALERT ANNUNCIATED. ENGINE ELECTRONIC CONTROLLER (EEC) INTERROGATION DISPLAY MAINTENANCE MESSAGES (FAULTS) 73211, 732138. PERFORMED FAULT ISOLATION MANUAL (FIM) TASKS, RETURN TO SERVICE (RTS), FUEL MATERING UNIT (FMU), EEC P20/T20 PROBES, FULL AUTHORITY DIGITAL ELECTRONIC CONTROL (FADEC), AND BOOSTER BLEED VALVE (BBV) WITH NO FAULT FOUND. PERFORMED ASSURANCE RUN, ALL CHECKED GOOD.