# SDR SWAA2025071791518

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2025
- Submitted: July 17, 2025
- Operation: Air carrier
- Aircraft: [N479WN](https://openairdocs.org/aircraft/N479WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33990
- Aircraft time: 69,309 hours, 41,828 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Ballast
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025071791518

## Discrepancy

CA SIDE WING EMERGENCY EXIT DOOR LIGHT INOP<[01] CA SIDE WINDOW LIGHT ABOVE EMERGENCY EXIT DOOR INOP OK TO CONTINUE PER MEL 33-2-03 SP1B AUTH#268976;[02] RELAMPED. NO JOY.  REPLACED CAPTAIN SIDE OVERWING EXIT WINDOW LIGHT BALLAST. OPS CHECK OKAY. REF AMM 33-21-00.

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