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 HAD LONG TERM FAULT #2 ENGINE 75-20832 "THE T3 SIGNAL IS OUT OF RANGE". GROUNDED - YES. REMOVED PRECOOLER UPSTREAM DUCT REF AMM 36-12-01-000-801. REPLACED T3 SENSOR IAW AMM TASK 73-21-07-000/400-801-F00. PERFORMED EEC TEST IAW AMM 73-21-00-804-F00. EEC TEST PASSES. FAULT STILL SHOWS IN FAULT HISTORY. REINSTALLED PRECOOLER UPSTREAM DUCT REF AMM 36-12-01-400-802.