# SDR ASAA2023111146136

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2023
- Submitted: November 13, 2023
- Operation: Air carrier
- Aircraft: [N917AK](https://openairdocs.org/aircraft/N917AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67500
- Aircraft time: 1,270 hours, 355 cycles
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- 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/ASAA2023111146136

## Discrepancy

DESCENDING THRU 12,000 FT WING ANTI ICE WAS SELECTED IN ICING CONDITIONS. L VALVE AMBER LIGHT ILLUMINATED. DESELECTED WING ANTI ICE TO AVOID ASYM ANTIICING. GROUNDED - YES. PERFORMED AN OPS CHECK ON L WING ANTI ICE, OP CHK NORMAL.. DETERMINED TO BE AN INTERMITTENT FAULT REF IFIM TASK 30-11-00-810-808. NO HISTORY 90 DAYS.

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