As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU CDU PAGE HAS MAINTENANCE MESSAGE 49 71146. FOLLOWED FIM 49 70 00 810 801 AND CONFIRMED THAT EGT1 THERMOCOUPLE IS INOP. REMOVED AND REPLACED EGT1 THERMOCOUPLE PER MM 49 71 21 400 801. OPS CHECK GOOD. GROUND VERIFICATION COMPLETED PER MM 49 71 21 400 801.