# SDR YENA2019102950619

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2019
- Submitted: October 29, 2019
- Operation: Air carrier
- Aircraft: [N907JB](https://openairdocs.org/aircraft/N907JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5865
- Aircraft time: 23,220 hours, 7,395 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Malfunctioned
- Location: Emergency Lights
- 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/YENA2019102950619

## Discrepancy

DURING HEAVY MAINTENANCE, EPSU'S 10WL, 11WL, 12WL, 13WL, 14WL LOW VOLTAGE NOTED ON OPS CHECK; REF LHT NR 5200000685-005000922310-0010 - REPLACED EPSU'S 10WL, 11WL, 12WL, 13WL, 14WL IAW A321 AMM 33-51-38-000-001-A REV 79. SUPPLEMENTAL INFORMATION TO FOLLOW.

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