# SDR SWAA2023062670984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2023
- Submitted: June 26, 2023
- Operation: Air carrier
- Aircraft: [N255WN](https://openairdocs.org/aircraft/N255WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32513
- Aircraft time: 55,852 hours, 33,539 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: UNKNOWN
- Condition: Faulty
- Location: Zn 200 Fus Top
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023062670984

## Discrepancy

LIGHTING EMER CHARGER L AFT CB POPPED WHEN EMER EXIT LIGHTS SWITCH PLACED IN ARMED POSITION.<[01] UPON TROUBLESHOOTING; FOUND EMERGENCY POWER SUPPLY(M1673) TO BE FAULTY. REMOVED AND REPLACED POWER SUPPLY AND BATTERY PER AMM 33-51-06. OPS CHECK GOOD.

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