# SDR ASAA2023050743172

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2023
- Submitted: May 9, 2023
- Operation: Air carrier
- Aircraft: [N946AK](https://openairdocs.org/aircraft/N946AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44085
- Aircraft time: 2,108 hours, 597 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Control Unit
- Part number: 8300027904
- Part serial: 6440
- Condition: Faulty
- Location: Window Heat
- Part time: 2,108 hours, 597 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: M
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023050743172

## Discrepancy

IN CRUISE @ FL300 WINDOW OVERHEAT (R1) ILLUMINATED. FOLLOWED QRH, LIGHT ILLUMINATED AGAIN. GROUNDED - YES. REF B737-9 AMM 30-41-11 REMOVED AND REPLACED WHCU, OPS TEST GOOD.

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