# SDR SWAA064021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 2, 2006
- Submitted: October 18, 2006
- Operation: Air carrier
- Aircraft: [N399WN](https://openairdocs.org/aircraft/N399WN), registered now
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 27693
- Aircraft time: 39,625 hours, 33,656 cycles
- Engine: Ge CFM563B1
- System (JASC): [5610 · Flight Compartment Windows](https://openairdocs.org/jasc/5610)
- Part: O-Ring
- Part number: 589354
- Condition: Burned
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: A
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA064021

## Discrepancy

AIR TURNBACK, PASSING FL 200 CAPTAINS L1 WINDOW UPPER LT CORNER CAUGHT FIRE.  TURNED OFF WINDOW HEAT SWITCH FIRE EXTINGUISHED.  REMOVED AND REPLACED L1 WINDOW O-RINGS IAW MM.

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