As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CSS AT FL360, APU FAULT LIGHT ILLUMINATED, NO BLUE LIGHT AND EGT>1000 DEG.C. GROUNDED - YES. ACCOMPLISHED FIM 49-30 TASK 803 STEP H (1). PER ENGINEERING REQUEST, REPLACED APU FUEL CONTROL UNIT REF AMM 49-31-11, AND LUBE MODULE REF AMM 49-91-11. OPS CHECK GOOD. THIS CLEARS MEL 49-1B.