# SDR YENA201905130274

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2019
- Submitted: May 17, 2019
- Operation: Air carrier
- Aircraft: [N663JB](https://openairdocs.org/aircraft/N663JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 3287
- Aircraft time: 46,910 hours, 16,776 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Part number: 32145410
- Part serial: 008561
- Condition: Failed
- Location: Cabin
- Part time: 46,898 hours, 16,776 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/YENA201905130274

## Discrepancy

DURING HEAVY MAINTENANCE, EMERGENCY LIGHTS AT LT OVER-WING FAIL TO ILLUMINATE WITH SWITCH IN ARMED AND CIRCUIT BREAKERS H5 & H6 ON THE 49VU OPENED; R & R EPSU & BATTERY PACK IAW AMM 33-51-38 SYSTEM OPS CHECK GOOD IAW AMM 33-51-00-710-804-A.

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