What was found
AIRCRAFT WAS GROUNDED: UNCOMMANDED FUEL TRANSFER INTO THE CENTER TANKS WHEN ALL PUMPS ARE OFF. REMOVE AND REPLACE FUEL SCAVENGE JET PUMP. PER AMM 28-22-17-401. OPERATIONAL TESTED PER AMM 28-22-00-720-802. SEE NON-ROUTINE 3719107.
- Difficulty date
- December 1, 2023
- Submitted
- December 4, 2023
- Operation
- Air carrier
- Aircraft
- N824NN
- Make and model
- Boeing 737823
- Aircraft serial
- 30916
- Aircraft time
- 40,390 hours, 16,936 cycles
- System (JASC)
- 2822 · Fuel Boost Pump
- Part
- Scavenge Pump
- Part number
- UNKNOWN
- Condition
- Faulty
- Location
- Zone 100 - Fuse
- Stage of operation
- CR
- How discovered
- V
- Nature of condition
- K
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.