# SDR AALA201712059001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2017
- Submitted: December 5, 2017
- Operation: Air carrier
- Aircraft: [N176UW](https://openairdocs.org/aircraft/N176UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1499
- Aircraft time: 56,865 hours, 21,308 cycles
- System (JASC): [2824 · Fuel Transfer Valve](https://openairdocs.org/jasc/2824)
- Part: Switch
- Part number: E0415C3LM004
- Condition: Unserviceable
- Location: Fuel Transfer
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201712059001

## Discrepancy

AIRCRAFT WAS NOT GROUNDED.  DURING CRUISE, WITH ADDITIONAL CENTER TANK AND CENTER TANK FUEL, ECAM DISPLAYED CENTER LEFT TRANSFER FAULT.  PERFORMED FUNCTIONAL TEST OF FUEL TRANSFER SYSTEM PER AMM 28-26-00-720-001.  TROUBLESHOT PER TSM 28-26-00-810-815A AND NOTED ERRONEOUS FAULTS GENERATED FROM FWC #1.  REMOVED AND REPLACED #1 FAULT WARNING COMPUTER  PER AMM 31-53-34 (AALA201712049030).  DUE TO HISTORY, REMOVED AND REPLACED PUSH BUTTON SWITCH FUEL MODE 4QL.  OPERATIONAL CHECK GOOD.

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