# SDR SWAA2025081403546

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2025
- Submitted: August 14, 2025
- Operation: Air carrier
- Aircraft: [N8533S](https://openairdocs.org/aircraft/N8533S), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63577
- Aircraft time: 26,814 hours, 13,679 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- 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/SWAA2025081403546

## Discrepancy

FORWARD LEFT HAND OVERWING UPPER AND LOWER EXIT SIGNS FAIL OPERATIONAL CHECK<[01] REMOVED AND REPLACED BATTERY AND BATTERY CHARGER AT M1694 IAW SWA B737-800 AMM 33-51-06. PERFORMED A GOOD OPERATIONAL TEST OF THE FORWARD LEFT HAND OVERWING UPPER AND LOWER EXIT SIGNS IAW SWA B737-800 AMM 33-51-00.;[02] VERIFIED REMOVED AND REPLACED BATTERY AND BATTERY CHARGER AT M1694 IAW SWA B737-800 AMM 33-51-06. PERFORMED A GOOD OPERATIONAL TEST OF THE FORWARD LEFT HAND OVERWING UPPER AND LOWER EXIT SIGNS IAW SWA B737-800 AMM 33-51-00.

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