# SDR DALA2024032003521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2024
- Submitted: March 20, 2024
- Operation: Air carrier
- Aircraft: [N104DN](https://openairdocs.org/aircraft/N104DN), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 10009
- Aircraft time: 10,514 hours, 5,004 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: UNKNOWN
- Condition: Inoperative
- 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/DALA2024032003521

## Discrepancy

AIRCRAFT 1004, DURING EMERGENCY LIGHTING SYSTEM OPS CHECK GOT CIDS 1 EPSU SYS TEST FAULTS ATA 335100 BAT/EPSU (13WL) AFT L AND ATA335100 BAT/EPSU (12WL) EXT R. TEST WAS PERFORMED PER AMDS 2561-4001-2L STEP 14. CORRECTIVE ACTION: RESET BATTERIES FOR EMERGENCY LIGHTS PER A321 AMM 33-51 OPS TEST GOOD. (LP 5275746)

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