# SDR ASAA2022120841091

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2022
- Submitted: December 12, 2022
- Operation: Air carrier
- Aircraft: [N971AK](https://openairdocs.org/aircraft/N971AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43339
- Aircraft time: 3,216 hours, 934 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Anti-Ice Valve
- Part number: UNKNOWN
- Condition: Warning Light
- Location: Unknown
- 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/ASAA2022120841091

## Discrepancy

#2 ENGINE ANTI-ICE COWL VALVE LIGHT ILLUMINATED WITH ANTI-ICE SWITCH ON. GROUNDED - YES. PERFORMED ENGINE ANTI-ICE SYSTEM OPERATIONAL TEST WITH ENGINE IDLE RUN. SYSTEM OPERATED CORRECTLY WITH NO DEFECTS NOTED. COWL VALVE LIGHT DID NOT ILLUMINATE DURING IDLE RUN WITH ANTI-ICE SWITCH ON. REF B737-9 AMM 30-21-00-710-801. GROUND VERIFICATION SUCCESSFUL.

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