# SDR ASAA2026010463865

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2026
- Submitted: January 22, 2026
- Operation: Air carrier
- Aircraft: [N273AK](https://openairdocs.org/aircraft/N273AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 61554
- Aircraft time: 24,398 hours, 7,898 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Charger
- Part number: D71702001
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026010463865

## Discrepancy

EMERGENCY LIGHTS IN CABIN ARE OUT FROM OVERWING DOORS FORWARD. GROUNDED - YES. OPENED FOUR BATTERY PACK ACCESS PANELS AND REPLACED BATTTERY PACKS OPS CHECK GOOD AND CLOSED ACCESS PANELS IAW B737-900 AMM 33-51-06-960-805. (S/N 138291, 138372, 428810, 428814)

---
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.