# SDR ASAA2022121941195

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2022
- Submitted: December 21, 2022
- Operation: Air carrier
- Aircraft: [N978AK](https://openairdocs.org/aircraft/N978AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43348
- Aircraft time: 1,593 hours, 464 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Anti-Ice Valve
- Part number: 632160682
- Part serial: 1856
- Condition: Fault Message
- Location: Right Wing
- Part time: 1,584 hours, 461 cycles
- Stage of operation: NR
- 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/ASAA2022121941195

## Discrepancy

RIGHT WING ANTI-ICE VALVE CAUTION. IN-FLIGHT. GROUNDED - YES. PERFORMED OPS TEST PER B737-9 AMM 30-11-11-710-801,OPS CHECK GOOD BUT DUE TO HISTORY MX CONTROL REQUEST ANTI-ICE VALVE CHANGE. REMOVED AND REPLACED R/H WING THERMAL ANTI-ICE VALVE REF TO AMM 30-11-11-400-801 OPS CK GOOD.

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