# SDR ASAA0956403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2009
- Submitted: August 17, 2009
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 10,897 hours, 3,436 cycles
- System (JASC): [3040 · Windshield/Door Rain/Ice Removal](https://openairdocs.org/jasc/3040)
- Part: Unknown
- Condition: Malfunctioned
- Location: Window Heat
- Part time: 10,890 hours, 3,433 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0956403

## Discrepancy

DURING FLT DECK PREFLIGHT BOTH L (SIDE & FWD) WINDOW HEAT OVERHEAT LIGHTS WERE ILLUMINATED.  PER QRH TURNED OFF L SIDE & FWD WINDOW HEAT FOR 5 MINS AND THEN TURNED BACK ON.  OVERHEAT LIGHTS DID NOT ILLUMINATE UNTIL APPROX 10 MINS LATER.  UNABLE TO DUPLICATE FAULT.  PRECAUTIONARY REPLACED P5 9 MODULE WINDOW/PITOT HEAT REF MM30 41 41.  OPS NORMAL.  VERIFICATION FLIGHT SUCCESSFUL.

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