# SDR SWAA2023022805047

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2023
- Submitted: February 28, 2023
- Operation: Air carrier
- Aircraft: [N558WN](https://openairdocs.org/aircraft/N558WN), registered now
- Make and model: Boeing 737-73V
- Registry model: [Boeing 737-73V](https://openairdocs.org/model/boeing-737-73v) (OpenAirDocs)
- Aircraft serial: 30248
- Aircraft time: 61,562 hours, 39,157 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part serial: 1536
- Condition: Defective
- Location: Zn 200 Fus Top
- Stage of operation: IN
- 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/SWAA2023022805047

## Discrepancy

DURING EMERGENCY LIGHT TEST FOUND BATTERY PACK POS M1670 DEFECTIVE.<[01] REPLACED BATTERY PACK POS M1670 S/N 1536 OFF WITH BATTERY PACK S/N WN1766 ON AS PER REF AMM 33-51-06-960-805. OPERATION TESTED NORMAL.;[02] VERIFIED STEP#1

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