As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GE DIAGNOSTICS REPORTS #1 ENGINE TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. (#PRI3/ETOPS) (FULL SET FUEL NOZZLE REPLACEMENT)NO EXTENSION ALLOWED (150 CYCLES).CNR 20230907074. GROUNDED - YES. (RESOLVED ON W/O: 1968805 TASKCARD: N/R-00001 ) REPLACED ALL NOZZLES PER T/C 73-ASA-02 ON THIOS W/O.