# SDR SWAA2026041777101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 5, 2026
- Submitted: April 17, 2026
- Operation: Air carrier
- Aircraft: N8638A
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36911
- Aircraft time: 39,341 hours, 19,166 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- 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/SWAA2026041777101

## Discrepancy

INOPERATIVE BATTERY PACK, EMERGENCY EXIT LIGHT, ON AFT LOWERED CEILING,  LT PASSENGER CABIN.   REPLACED BATTERY PACK IAW AMM 33-51-06-960-805, TESTED OK.

---
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.