# SDR AALA20171119002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2017
- Submitted: November 21, 2017
- Operation: Air carrier
- Aircraft: [N106NN](https://openairdocs.org/aircraft/N106NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5932
- Aircraft time: 14,072 hours, 2,899 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321430
- Condition: Faulted
- Location: Emergency Lights
- 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/AALA20171119002

## Discrepancy

DURING CID1 SYSTEM TEST,  LATCHED FAULT BATTERY , EMERGENCY POWER SUPPLY UNIT (15WL) MID LEFT. REPLACED THE BATTERY PACK IAW AMM 33-51-38.  OPS CHECKED.

---
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.