# SDR USAASA04026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2004
- Submitted: July 20, 2004
- Operation: Air carrier
- Aircraft: [N184US](https://openairdocs.org/aircraft/N184US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1651
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321430
- Condition: Weak
- Location: Emergency Light
- 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/USAASA04026

## Discrepancy

BDL - FOUND THE EMERGENCY POWER SUPPLY UNIT BATTERY WEAK AT THE L3 DOOR LOCATIONS.  MAINTENANCE REPLACED THE BATTERY FOR THE EMERGENCY POEWR SUPPLY UNIT AT THE L3 DOOR LOCATION.  (M)

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