# SDR ASAA2023061043522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2023
- Submitted: June 12, 2023
- Operation: Air carrier
- Aircraft: [N593AS](https://openairdocs.org/aircraft/N593AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35107
- Aircraft time: 55,596 hours, 16,594 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023061043522

## Discrepancy

DURING DESCENT COWL VALVE OPEN LIGHT REMAINED BRIGHT BLUE WITH AMBER TAI INDICATION ON #1 ENGINE AFTER ANTI - ICE SWITCH POSITIONS TO OFF. GROUNDED - YES. ENGINE ANTI ICE VALVE STUCK OPEN, CYCLED ANTI ICE VALVE. ENGINE RUN COMPLETED. ANTI ICE VALVE AND SWITCH OPERATION NORMAL. REF B737-800 FIM 30-21 TAK 804.

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