As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE TREND DATA SHOWS AND INCREASE IN CRUISE DELTA EGT ALONG WITH A DECREASE IN TAKEOFF EGT HOT DAY MARGIN. ACCOMPLISHED CLEANING PER MM 77-21-00 PGS 201-202. ALL CONTACTS LOOK GOOD. NOTE: S1 &S2 VALUES ARE NEAR 35 DEGREE DIFF LIMIT.