# SDR SWAA2023071174507

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2023
- Submitted: July 11, 2023
- Operation: Air carrier
- Aircraft: [N8542Z](https://openairdocs.org/aircraft/N8542Z), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63581
- Aircraft time: 19,477 hours, 9,654 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: UNKNOWN
- Condition: Inoperative
- 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/SWAA2023071174507

## Discrepancy

SEVERAL EXTERIOR AND INTERIOR EMERGENCY LIGHTS INOPERATIVE.<[01] PERFORMED T/S AS PER WDM 33-51-14 AND FOUND DEFECTIVE BATTERY PACKS AT POSITIONS M1675; M2816; M2335; AND M1676. REPLACED EMERGENCY LICHTS BATTERY PACKS POSITIONS M1675; M2816; M2335; AND M1676. AS PER B737 AMM 33-51-06-960-805. TEST FOUND NORMAL;[02] VERIFIED PERFORMED T/S AND FOUND DEFECTIVE BATTERY PACKS AT POSITIONS M1675; M2816; M2335; AND M1676. REPLACED EMERGENCY LIGHTS BATTERY PACKS POSITIONS M1675; M2816; M2335; AND M1676. TEST FOUND NORMAL.

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