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 TAKEOFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. ACCOMPLISHED T49.5 PROBE AND EGT SYSTEM INSPECTION REF MM 77 21 01. FOUND S2 PROBE OUT OF TOLERANCE. REPLACED S2 PROBE REF MM 77 21 01. OPS TEST GOOD REF SAME.