What was found
ETOPS SIGNIFICANT SYSTEM, APU FAILED TO START, FAULT LGT ILLUM AND EICAS MSG APU FAULT DISPLAYED, ADDITIONAL START ATTEMPTS UNSUCCESSFUL. ACCOMP FIM 49-11-00, APU ECU BITE HAD A/C START CIRCUIT MSG, REPLACED APU STARTER PER AMM 49-41-01 AND START CIRCUIT RELAY K197. OPS AND LEAK CHK GOOD. RELAY REMOVED AND REPLACED PER FIM 49-11-00, SECURED APU DOORS, FAULT MSG CLEARED, OK FOR SERVICE.