As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING T/C 78273000, FOUND FAULT CODE 77-10851 THE BOTTOM RT EGT SIGNAL IS OUT OF RANGE T495 S2 FOR ENG NR 1. ACFT GROUNDED. REMOVED NR 1 ENGINE LOWER LT AND RT T49.5 PROBES IAW MM 77-21-01-000-801-F00. INSTALLED RT LOWER T49.5 PROBE IAW MM 77-21-01-400-801-F00. INSTALLED NEW LOWER LT T49.5 PROVE IAW MM 77-21-01. BOTH PROBES TEST GOOD IAW POWER PLANT REF TABLE 71-00-00-800-811-F00.