# SDR YENA201904280248

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2019
- Submitted: May 2, 2019
- Operation: Air carrier
- Aircraft: [N794JB](https://openairdocs.org/aircraft/N794JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 4904
- Aircraft time: 31,128 hours, 10,693 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Discharged
- Location: Cabin
- 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/YENA201904280248

## Discrepancy

DURING HEAVY MAINTENANCE, EPSU'S 10WL, 11WL & 12WL FAIL EMERGENCY TEST; REF NR 440580-36020: REMOVED AND INSTALLED NEW EPSU BATTERIES 10WL, 11WL & 12WL IAW AMM 33-51-38, SYSTEM OPS CHECK GOOD IAW MM 33-51-38-710-052 B. SUPPLEMENTAL INFORMATION TO FOLLOW.

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