As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GE DIAGNOSTICS REPORTS NR 2 ENGINE TREND DATA CONTINUES TO SHOW A SHIFT IN DELTA CRUISE AND TAKE OFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. PERFORMED TASK 77 21 01. FOUND T49.5 S3 PROBE FAULTY (HIGH RESISTANCE). INSTALLED NEW S3 PROBE REF 77 21 01. OPS CKD REF EEC TEST 73 21 00. SYS CHECKS NML.