# SDR ASAA2023030442180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2023
- Submitted: March 6, 2023
- Operation: Air carrier
- Aircraft: [N948AK](https://openairdocs.org/aircraft/N948AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44090
- Aircraft time: 1,602 hours, 466 cycles
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Sensor
- Part number: 670414455
- Condition: Faulty
- Location: #1 Engine
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023030442180

## Discrepancy

#1 ENGINE ENG ANTI ICE COWL VALVE LIGHT ILLUMINATED TWICE. TURNED OFF WENT OUT. TURNED ON CAME BACK. GROUNDED - YES. CHECKED OMF FOR ANY EXISTING FAULT AND FOUND NO RELATED MAINT MSG. ACCOMPLISHED B737-9 IFIM TASK 30-21-00-810-807 COWL ANTI-ICE VALVE TEST GOOD. REPLACED ENG ANTI-ICE MINIMUM PRESS SWITCH REF B737-9 AMM 30-21-21 OPS CK SWITCH GOOD. RUN #1 ENG AND OPS TEST OK REF AMM 30-21-00-710-801.

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