# SDR ASAA2022020937655

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2022
- Submitted: March 12, 2022
- Operation: Air carrier
- Aircraft: [N556AS](https://openairdocs.org/aircraft/N556AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35175
- Aircraft time: 52,133 hours, 18,197 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Failed
- Location: Main Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022020937655

## Discrepancy

EMERGENCY LIGHTS BY L2 DOOR FAILED BATTERY PACK TEST. GROUNDED - YES. REPLACED BATTERY PACK S/N 189920 OPS CHECK GOOD IAW B737-800 AMM 33-51-06-960-805.

---
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.