As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIAGNOSTICS REPORTED NR 2 ENGINE TREND DATA SHOWS A SHIFT IN DELTA CRUISE AND TAKEOFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. ACFT GROUNDED. ACCOMPLISHED T49.5 + EGT SYSTEM INSPECTION IAW AMM 77-21-01. FOUND SLIGHT CONTAMINATION AT J10 CONNECTOR OF EEC, CLEANED, CK'S GOOD.