As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMP T/C 78273000 RECORDED FAULT CODE 73-31371 UPPER EGT SECTORS READING HIGH NR 1 ENGINE ECONOMIC FAULT. ACFT GROUNDED. R & R NR 1 ENGINE UPPER 11 FUEL NOZZLES IAW POWERPLANT-73CMPT-07267-2. PERFORMED REPAIR CONFIRMATION IAW FIM 73-11, TASK 801. NO RECENT FAULTS NOTED.