# SDR ASAA2023011321501

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2023
- Submitted: January 13, 2023
- Operation: Air carrier
- Aircraft: [N537AS](https://openairdocs.org/aircraft/N537AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35204
- Aircraft time: 40,538 hours, 11,707 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Circuit Breaker
- Condition: Tripped
- Location: Window Heat
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023011321501

## Discrepancy

LEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATED ON GROUND. GROUNDED - YES. INITIAL EVALUATION, FOUND 2 CB POPPED OPEN FOR WHCU(S) ON P18-3 E1/2. PERFORMED CB RESET INSPECTION IAW B737-800 AMM 20-60-01, NO DEFECTS NOTED. RESET 2 CB X2. RAN WHCU BITE IAW AMM 30-41-11-710-801, NO FAULTS FOUND. CB'S REMAIN IN.

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