# SDR DALA2023041202859

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2023
- Submitted: April 12, 2023
- Operation: Air carrier
- Aircraft: [N502DN](https://openairdocs.org/aircraft/N502DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0135
- Aircraft time: 22,765 hours, 2,438 cycles
- Engine: Rroyce TRENTXWB84
- Engine time: 10,992 hours, 2,413 cycles
- System (JASC): [3000 · Ice/Rain Protection System](https://openairdocs.org/jasc/3000)
- Part: Unknown
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023041202859

## Discrepancy

SHIP 3502 -DIV- TO LAX DUE TO THE LEFT ENGINE ANTI ICE VALVE FAILED CLOSED. CORRECTIVE ACTION: REPLACED LEFT ENGINE PRESSURE REGULATING VALVE. (LP 4079720)

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