# SDR CALA2016090195711

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2016
- Submitted: September 1, 2016
- Operation: Air carrier
- Aircraft: [N843UA](https://openairdocs.org/aircraft/N843UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1573
- Aircraft time: 50,110 hours, 21,088 cycles
- Engine: Iae V2522A5
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Malfunctioned
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016090195711

## Discrepancy

EMERGENCY LIGHT TEST FAILED.  FOUND TWO FAULT MESSAGES FOR EPSU INT LOAD AFT L, AND EPSU COMM FWD L, AFTER EMERGENCY LIGHT TEST. TROUBLESHOT AND TESTED IAW TSM 33-51-00-810-807-A

---
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.