# SDR AALA202407290321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2024
- Submitted: July 29, 2024
- Operation: Air carrier
- Aircraft: [N170US](https://openairdocs.org/aircraft/N170US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1462
- Aircraft time: 74,295 hours, 28,757 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 2221
- Condition: Malfunctioned
- Location: Zone 200
- Part time: 48,042 hours, 17,818 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202407290321

## Discrepancy

AIRCRAFT WAS GROUNDED: EMERGENCY OVERHEAD LIGHTS FLASHING ON AND OFF DURING TAXI OUT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT.

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