As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE BITE TEST SHOWS MESSAGE #77-20861 "THE BOTTOM LEFT EGT SIGNAL (T49.5 S-3) IS OUT OF RANGE" ON 0-10 FLIGHT LEGS. GROUNDED - YES. REPLACED S3 T49.5 PROBE ON #1 ENGINE REF AMM 77-21-01/401, PER AMM 71-00-00-800-811-F00 POWERPLANT TEST REF TABLE ACCOMPLISH EEC TEST REF AMM 73-21-00-700-804-F00. EEC TEST GOOD. NO DEFECTS TO NOTE.