# SDR AALA202507217750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2025
- Submitted: July 21, 2025
- Operation: Air carrier
- Aircraft: [N107US](https://openairdocs.org/aircraft/N107US), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1052
- Aircraft time: 72,682 hours, 36,696 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Faulted
- Location: Zone 200
- 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/AALA202507217750

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: WHILE PERFORMING OPERATIONAL TEST OF EMERGENCY LIGHTS ON P/S CHECK, EMERGENCY LIGHT SYSTEM TEST FAILED.  RECEIVED FAULT CODE: EMER SYSTEM / ATA 33-51-38 / EPSU INT LOAD AFT L.

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