# SDR YENA201711110922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2017
- Submitted: November 13, 2017
- Operation: Air carrier
- Aircraft: [N564JB](https://openairdocs.org/aircraft/N564JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2020
- Aircraft time: 59,536 hours, 20,972 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321431
- Part serial: 786014
- Condition: No Test
- Location: Emergency Lights
- Part time: 6,757 hours, 2,553 cycles
- 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/YENA201711110922

## Discrepancy

DURING HEAVY MAINTENANCE, FORWARD CABIN EMERGENCY LIGHTS FAILED TO ILLUMINATE DURING EMERGENCY LIGHT OPERATIONAL TEST WHEN CIRCUIT BREAKERS 1WL (H5) AND 2WL (H6) ARE OPENED; REPLACED EPSU 10WL IAW A320 AMM 33-51-38. OPS CHECKED GOOD.

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