# SDR UALA2009042001144

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2009
- Submitted: April 24, 2009
- Operation: Air carrier
- Aircraft: [N171UA](https://openairdocs.org/aircraft/N171UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 24322
- Aircraft time: 74,850 hours, 8,972 cycles
- Engine: Pwa PW4056
- System (JASC): [2830 · Fuel Dump System](https://openairdocs.org/jasc/2830)
- Part: Pump
- Part number: 60B9260317
- Condition: Failed
- Location: Fuel System
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009042001144

## Discrepancy

FUEL LEAK UNDER LEFT WING.  FLIGHT DIVERTED.  UNWANTED FUEL TRANSFER CONFIRMED.  FUEL TRANSFER FROM CENTER TO NR 2 MAIN, 500LB IN 10 MIN.  OPENING NR 2 FOR TROUBLESHOOTING, FOUND NR 2 MAIN OVERRIDE JETTISON PUMP DISCHARGE CHECK VALVE BAD.  REPLACED JETTISON PUMP.  NEEDS OPS CHECK.  OP CHECKS GOOD.  NO UNWANTED TRANSFER NOTED.

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