# SDR QXEA2021071500363

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2021
- Submitted: July 15, 2021
- Operation: Air carrier
- Aircraft: N422QX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4150
- Aircraft time: 32,807 hours, 35,037 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- 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/QXEA2021071500363

## Discrepancy

EMERGENCY POWER SUPPLY UNIT EPSU3 FAILED TO ILLUMINATE LIGHTS FOR 10 MINUTES.

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