Service difficulty report · Pressure Switch · Boeing 737890
FAA SDR system
- Difficulty date
- August 6, 2019
- Submitted
- August 9, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 43,245 hours, 13,041 cycles
- Engine
- Cfmint CFM567B27
- Part
- Pressure Switch
- Part number
- QA07995
- Part serial
- RD45763
- Condition
- Intermittent
- Location
- Fuel Filter
- Part time
- 7,291 hours, 2,046 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO. 1 ENGINE FUEL FILTER BYPASS ILLUMINATED WITH MASTER CAUTION ON TAXI - OUT. LIGHT WAS INTERMITTENT. LIGHT EXTINGUISHED AT SHUTDOWN. GROUNDED - YES. REMOVED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH PER B737-800 AMM 73-34-01-000-801-F00. INSTALLED FUEL FILTER DIFFERENTIAL PRESSURE SWITCH PER AMM 73-34-01-400-801-F00. PERFORMED INSTALLATION TEST (GROUND VERIFICATION TEST) PER AMM SUBTASK 73-34-01-840-004-F00 TEST PASSED LEAK TEST PASSED.