# SDR 99UAL900102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N803UA](https://openairdocs.org/aircraft/N803UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 748
- Engine: Iae V2522A5
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Valve
- Condition: Failed
- Location: Fuel Syst
- Component: HTE900034
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99UAL900102

## Discrepancy

RIGHT SIDE FUEL BURNING MUCH FASTER THAN LEFT SIDE.  IN 2:30 FLT TIME, FUEL IMBALANCE BECAME GREATER THAN 300 LBS AND CAUSED A FUEL IMBALANCE ECAM WARNING.  AT THAT TIME, THE XFEED VALVE INDICATED CLOSED.  CROSSFEED VALVE FAILED OPEN.  ECAM AND PB SWITCH BOTH SHOWED VALVE CLOSED.  REMOVED AND REPLACED DEFUEL/CROSSFEED VALVE ASSEMBLY PER AMM 28-25-43.

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