# SDR CALA2025031002668

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2025
- Submitted: March 10, 2025
- Operation: Air carrier
- Aircraft: [N804UA](https://openairdocs.org/aircraft/N804UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 759
- Aircraft time: 79,787 hours, 34,317 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: Faulted
- Location: Zone 200
- 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/CALA2025031002668

## Discrepancy

FORWARD DOOR ESCAPE SLIDE PACK ASSEMBLY INSTALL {A3NB-25-3-0020} - EMERGENCY SYSTEM LIGHTS BITE CHECK FAILS (NO SYS OK LIGHT) WITH STATUS MESSAGE (EPSU INT LOAD FWD L) REMOVED AND REPLACED BATTERY OF EPSU IAW AMM 33-51-38. OPS CHECK GOOD.

---
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.