Service difficulty report · Pressure Switch · Boeing 737890
FAA SDR system
- Difficulty date
- November 19, 2019
- Submitted
- November 22, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35187
- Aircraft time
- 48,278 hours, 14,319 cycles
- Part
- Pressure Switch
- Part number
- 21C1321
- Condition
- Failed
- Location
- Lt Wing Fuel
- Stage of operation
- NR
- 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
FUEL LOW PRESSURE LIGHT ILLUMINATED TANK #1 AFT WITH FUEL PUMP SWITCH ON. GROUNDED - YES. REMOVED AND REPLACED #1 AFT FUEL BOOST PRESSURE SW REF B737-800 AMM 28-42-11, OPS CHECK NORMAL PER SAME. REMOVED AND #1 AFT BOOST PUMP GFI RELAY R18 REF AMM 28-22-10 OPS CHECK NORMAL PER AMM 28-22-41.