As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE TREND DATA CONTINUES TO SHOW ERRORS INDICATIVE OF EGT INDICATION SYS ANOMALIES. ALL OTHER PARAMETERS ARE NORMAL. COCKPIT INDICATION IS STILL WITHIN RANGE. FOUND T49.5 PROBE S4 OUT OF RANGE. NO SYS FAULTS NOTED REF. T/C 78273000. R & R T49.5 S4 PROB3, REF AMM 77-21-01. OPS NORMAL IAW TASK 71-00-00-800-811-F00.