As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISH, T/C 78273000 FOUND FAULT 77-10841 TOP RT EGT SIGNAL, T495S1 OUT OF RANGE ON 1 ENGINE. ACFT GROUNDED. ACCOMPLISHED TC 78273000 AND FOUND FAULT 77-10841 STILL ACTIVE. REMOVED AND INSTALLED NEW T49.5 S1 PROBE REF AMM 77-21-01. PERFORMED POWER PLANT REF TEST TABLE EEC TEST.