Service difficulty report · Pressure Switch · Boeing 737890
FAA SDR system
- Difficulty date
- December 7, 2018
- Submitted
- December 11, 2018
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 36482
- Aircraft time
- 37,797 hours, 11,294 cycles
- Engine
- Cfmint CFM567B27
- Part
- Pressure Switch
- Part number
- QA07995
- Part serial
- RZ44239
- Condition
- Failed
- Location
- Nr 1 Eng Fuel
- Part time
- 16,598 hours, 4,947 cycles
- Stage of operation
- CL
- 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
#1 FUEL FILTER BYPASS LIGHT ILLUMINATED IN CLIMB. #1 ENG OPS NORMAL. GROUNDED - YES. PERFORMED FUEL FILTER BYPASS FAULT ISOLATION REF B737-800 AMM 73-05 NO FAULT MESSAGES. REMOVED + REPLACED FUEL FILTER ELEMENT REF AMM 73-11-02. NO CONTAMINATION FOUND REMOVED + REPLACED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH REF AMM 73-34-01 PERFORMED EEC TEST REF AMM 73-21-00 NO DEFECTS NOTED IDLE LEAK CHECKED GOOD.