# SDR UPS05145522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2005
- Submitted: September 30, 2005
- Operation: Air carrier
- Aircraft: [N139UP](https://openairdocs.org/aircraft/N139UP), registered now
- Make and model: Airbus A300 F4-622R
- Registry model: [Airbus A300 F4-622R](https://openairdocs.org/model/airbus-a300-f4-622r) (OpenAirDocs)
- Aircraft serial: 0822
- System (JASC): [2820 · Aircraft Fuel Distribution System](https://openairdocs.org/jasc/2820)
- Part: Actuator
- Condition: Inoperative
- Location: Isolation Valve
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS05145522

## Discrepancy

FUEL IMBALANCE BETWEEN LT AND RT INNER TANKS. EMERGENCY DECLARED. R & R LT ISOLATION VALVE ACTUATOR IAW AMM 28-22-52-4. R&R'D LEFT ISOLATION VALVE PB SW. SYSTEM CKS GOOD.

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