# SDR ASAA2017111822622

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2017
- Submitted: November 20, 2017
- Operation: Air carrier
- Aircraft: [N513AS](https://openairdocs.org/aircraft/N513AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35192
- Aircraft time: 35,045 hours, 10,533 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017111822622

## Discrepancy

RIGHT FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED AT FL380 SWITCH PLACED IN OFF POSITION FOR 5 MINUTES. WHEN PLACED TO ON POSITION NORMAL OPS. GROUNDED - YES. ACCOMPLISHED WHCU BITE, NO CURRENT FAULTS. HISTORY SHOWED NUMEROUS REPEATS ON WINDOW HEAT SENSOR FAIL. REF FIM 30-41-00-810-801. PLACED WINDOW SENSOR SELECT SWITCH TO OTHER SENSOR POSITION, NO CURRENT FAULTS NOTED, BITE NORMAL.

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