What was found
FUEL IMBALANCE. RETURNED TO FIELD. AFTER INPUT MONITORING TEST POINTED TOWARDS PRESSURE SWITCH ON NR 3 FWD OVRD PUMP. REPLACED PUMP, OPS CHECKED GOOD.
- Difficulty date
- March 29, 2013
- Submitted
- April 25, 2013
- Operation
- Air carrier
- Aircraft
- N128UA
- Make and model
- Boeing 747422
- Aircraft serial
- 30023
- Aircraft time
- 52,533 hours, 6,134 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2822 · Fuel Boost Pump
- Part
- Pump
- Part number
- 60721014
- Part serial
- 216
- Condition
- Failed
- Location
- Nr 3
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.