What was found
AIRCRAFT WAS NOT GROUNDED: LEFT MAIN TANK AFT FUEL PUMP STAYS PRESSURIZED WITH SWITCH IN THE OFF POSITION. REMOVED AND REPLACED S4 SWITCH, OPERTIONAL CHECK GOOD. PER FIM 28-22-00-810-803.
- Difficulty date
- May 10, 2025
- Submitted
- May 12, 2025
- Operation
- Air carrier
- Aircraft
- N952NN
- Make and model
- Boeing 737823
- Aircraft serial
- 31196
- Aircraft time
- 32,179 hours, 13,454 cycles
- System (JASC)
- 2822 · Fuel Boost Pump
- Part
- Switch
- Condition
- Failed
- Location
- Zone 100
- 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.