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 SHOWS A SUDDEN SHIFT IN EGT HOT DAY MARGIN AND DELTA EGT ALL OTHER PARAMETERS NORMAL. EGT INDICATION ERRORS ARE SUSPECT. TROUBLESHOT & FOUND EGT PROBE T49.552 TO BE OUT OF LIMITS FOR ELECTRICAL. RESISTANCE REMOVED 749.552 IAW AMM 77-21-01-000-801-F00. REPLACED EGT PROBE T49.5 IAW AMM 77-21-01-700-801-F00. OPS CHECK GOOD IAW AMM 73-21-00-700-804-F00.