# SDR F3LA2024050800065

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 3, 2024
- Submitted: May 8, 2024
- Operation: Air carrier
- Aircraft: [N343FR](https://openairdocs.org/aircraft/N343FR), registered now
- Make and model: Airbus A320-251N
- Registry model: [Airbus A320-251N](https://openairdocs.org/model/airbus-a320-251n) (OpenAirDocs)
- Aircraft serial: 08580
- Aircraft time: 17,210 hours, 7,698 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 259483
- Condition: No Test
- 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/F3LA2024050800065

## Discrepancy

AIRCRAFT WAS NOT GROUNDED AND IS IN CHECK FOR SCHEDULED MX. DURING THE PRE-HANGAR CHECKS THE EPSU SYSTEM TEST GIVES THE MAINTENANCE MESSAGE: BAT/EPSU (11WL) EMER. LIGHT NEED TO BE TROUBLESHOOTED AS PER TSM 33-51-00-810-855-A REV. 97.  REPLACED EPSU BATTERY (11WL) AS PER AMM 33-351-38-400-002-A REV. 97. MX ACTION IS ACCEPTABLE.

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