Service difficulty report · Pressure Switch · Boeing 737890
FAA SDR system
- Difficulty date
- July 24, 2017
- Submitted
- July 26, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35091
- Aircraft time
- 41,690 hours, 12,400 cycles
- Engine
- Cfmint CFM567B262
- Part
- Pressure Switch
- Part number
- QA07995
- Part serial
- RZ44986
- Condition
- Faulted
- Location
- Nr 1 Fuel
- Part time
- 4,755 hours, 1,574 cycles
- Stage of operation
- TX
- How discovered
- O
- 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
DURING TAXI OUT, THE NR 1 ENGINE FUEL FILTER BYPASS LIGHT ILLUMINATED. DURING ENGINE SHUTDOWN THE FUEL FILTER BYPASS NR 1 EXTINGUISHED. ACFT GROUNDED. ACCOMPLISHED FIM 73-05 TASK 801, FOUND FAULT CODE 73-31071. REMOVED & REPLACED THE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH IAW AMM 73-34-01. OPS & LEAK CHECKED GOOD.