- Difficulty date
- July 25, 2023
- Submitted
- August 7, 2023
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44100
- Aircraft time
- 4,748 hours, 1,391 cycles
- Part
- Fuel Nozzle
- Part number
- 2085M31G03
- Part serial
- PAT39J50
- Condition
- Coked
- Location
- #1 Engine
- Part time
- 4,748 hours, 1,391 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
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 (SN 60A323) TREND DATA SHOWS EXCESS COKING OF THE FUEL NOZZLE MAIN ORIFICES. -----#PRI3/ETOPS----- (FULL SET FUEL NOZZLE REPLACEMENT 737MAX T/C 73-ASA-02)NO EXTENSION ALLOWED (150 CYCLES).CNR 20230725055. GROUNDED - YES. (RESOLVED ON W/O: 1963219 TASKCARD: N/R-00001 ) REPLACED FULL FUEL NOZZLE SET ON #2 ENGINE S/N 60A323. SEAMC AUSTIN NOTIFIED.