# SDR AALA201509019006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2015
- Submitted: September 1, 2015
- Operation: Air carrier
- Aircraft: [N741UW](https://openairdocs.org/aircraft/N741UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1269
- Aircraft time: 41,464 hours, 24,915 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 2854
- Condition: Defective
- Location: Cabin
- Part time: 41,464 hours, 24,915 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201509019006

## Discrepancy

C11 CHECK, EMER LIGHTS SYS FAILS BITE TEST ON WEEKLY CHECK.  FOUND EPSU WL11 DEFECTIVE, R & R.  OPERATIONS CHECKED EPSU WL11 IAW AMM 33-51-38-401.

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.