As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING TASK CARD 78273000, FOUND ECONOMIC FAULT 77-20861 (THE BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE) ON #1 ENGINE. DEFERRED PER T/C 78273000. GROUNDED - YES. ACCOMPLISHED ENG 1 EEC BITE TEST, NO FAULTS LOGGED. ACCOMPLISHED ENG 1 T495 TEMPERATURE INPUT MONITORING TEST, S1- 137.62 S2- 92.50 S3- 102.62 S4- 151.25. SYSTEM OPS NML REF B737-800 AMM 73-21-00-700-804-F00. THIS CLEARS PLT.