# SDR ASAA2022072439175

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2022
- Submitted: July 25, 2022
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 32,177 hours, 10,154 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Sensor
- Part number: UNKNOWN
- Condition: Failed
- Location: Unknown
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022072439175

## Discrepancy

L-1 WINDOW HEAT INOP. GROUNDED - YES. PERFORMED WINDOW HEAT CONTROL UNIT BITE CK REF B737-900 FIM 30-41 TASK 801 AND L-1 CONTROLLER FAULTS WINDOW SENSOR. PERFORMED FIM 30-41 TASK 812 AND SWAPPED TO SPARE SENSOR AND FAULT CLEARED, BAD SENSOR MARKED AS INOP.

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