Service difficulty report · Fuel Control · Boeing 737890
FAA SDR system
- Difficulty date
- November 17, 2018
- Submitted
- November 21, 2018
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35188
- Aircraft time
- 44,147 hours, 13,248 cycles
- Part
- Fuel Control
- Part number
- 4419215
- Part serial
- CUC10786
- Condition
- Faulted
- Location
- Apu
- Part time
- 2,818 hours, 5,015 cycles
- Stage of operation
- TX
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ILLUMINATED ON APU START. GROUNDED - YES. ACCOMPLISHED APU BITE PROCEDURE PER B737-800 FIM 49-60 TASK 801, FAULT CODE 49-41011 NO FLAME SHUTDOWN AND FAULT CODE 49-31161 FCU RESOLVER CIRCUIT SHORT. APU INITIALLY ROTATES ON START. CONFIRMED GOOD IGNITION BUT ONLY 5 PSI FUEL FLOW. REMOVED AND REPLACED APU FCU PER B737-800 AMM 49-11-11 AND REMOVED AND REPLACED APU LUBE MODULE IAW AMM 49-31-11. OPS AND LEAK CHECKED GOOD.