# SDR SWAA2018041021082

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2018
- Submitted: April 10, 2018
- Operation: Air carrier
- Aircraft: [N494WN](https://openairdocs.org/aircraft/N494WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33868
- Aircraft time: 47,128 hours, 27,664 cycles
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: Controller
- Part number: 8300005604
- Part serial: 6452
- Condition: Arced
- Location: Window Heat
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2018041021082

## Discrepancy

DURING CLIMB,  AT 13,000 FEET, L1 WINDOW CRACKED, L2 WINDSHIELD OVERHEAT LIGHT ILLUMINATED AND ARCED. ODOR OF ELECTRICAL SMOKE EXPERIENCED BRIEFLY BEFORE REMOVING POWER PER QRH PROCEDURE.  AIR TURNBACK.  R & R THE LT FRONT WINDSHIELD HEAT CONTROLLER IAW AMM.

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