# SDR SWAA2022110367382

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2022
- Submitted: November 7, 2022
- Operation: Air carrier
- Aircraft: [N8509U](https://openairdocs.org/aircraft/N8509U), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36925
- Aircraft time: 20,183 hours, 9,620 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- 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/SWAA2022110367382

## Discrepancy

SUPPLEMENTAL INFORMATION: FWD ENTRY WAY EMERGENCY LIGHTS INOP / [01] REPLACED M1675 BATTERY/ CHARGER ASSEMBLY AND TESTED PER AMM 33-51-06-960-806; NO DEFECTS NOTED. REPLACED M2816 BATTERY/CHARGER ASSEMBLY AND TESTED PER AMM 33-51-06-960-806. AFTER 30 MINUTES CHARGING; NO LIGHTS; SLAVED BATTERY FROM M1675 (SEE DEFECT TTG8Q00FVHN7) TO CONFIRM LIGHTS WORK WITH KNOWN GOOD BATTERY.;[02] COMPLETED STEPS 1 AND 2;[03] REMOVED AND REPLACE M2816 BATTERY PACK AND OPS CHECKED PER AMM 33-51-06-960-805;[04] OPS CHECK FOR CORRECTIVE ACTION 3 CHECKED GOOD;[05] INSPECTION COMPLETE

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.