# SDR F3LA2023102300192

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2023
- Submitted: October 23, 2023
- Operation: Air carrier
- Aircraft: [N721FR](https://openairdocs.org/aircraft/N721FR), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 07884
- Aircraft time: 17,396 hours, 7,502 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 32146210
- Part serial: 156727
- Condition: Failed
- Location: Zone 200
- Part time: 17,389 hours, 7,499 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/F3LA2023102300192

## Discrepancy

DISCREPANCY: AIRCRAFT WAS IN SCHEDULED MAINTENANCE AND WAS NOT OUT OF SERVICE DUE TO ISSUE: LP359934 ITEM 2, EPSU 11WL FAULTING.
CORRECTIVE ACTION: REMOVED AND REPLACED EPSU 11WL REF. AMM 33-51-38-000-001-A/400-001-A. OPS TEST OKAY. A/C OKAY TO CONTINUE./END/

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