As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIAGNOSTIC REPORTS, NR 2 ENGINE TREND DATA SHOWS A SHIFT IN DELTA CRUISE AND TAKEOFF MARGIN INDICATIVE OF EGT INDICATION ERRORS. ACFT GROUNDED. ACCOMPLISHED TSR907735. FOUND UPPER RT EGT ELEMENT BAD. REPLACED UPPER RT ELLEMENT. ALL OPS NORMAL, REF MM 77-21-01, 77-21-01.