# SDR DALA2021042902473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2021
- Submitted: April 29, 2021
- Operation: Air carrier
- Aircraft: [N515DN](https://openairdocs.org/aircraft/N515DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0404
- Aircraft time: 1,963 hours, 211 cycles
- System (JASC): [2840 · Fuel Indicating System](https://openairdocs.org/jasc/2840)
- Part: Concentrator
- Condition: Malfunctioned
- Location: Fuel Data
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021042902473

## Discrepancy

SHIP 3515 -DIV- TO DTW DUE TO FUEL QUANTITY BLANK ON LEFT AND RIGHT TANKS WITH THE CENTER TANK IN THE DEGRADED MODE. CORRECTIVE ACTION: REPLACED TWDCU (TANK WALL DATA CONCENTRATOR UNIT) AND OPS CHECK GOOD. (7452321)

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