# SDR AALA201712049024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2017
- Submitted: December 5, 2017
- Operation: Air carrier
- Aircraft: [N179UW](https://openairdocs.org/aircraft/N179UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1521
- Aircraft time: 56,157 hours, 20,934 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 2315
- Condition: Inoperative
- Location: Emergency Lights
- Part time: 53,842 hours, 20,149 cycles
- 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/AALA201712049024

## Discrepancy

AIRCRAFT WAS GROUNDED.  EMERGENCY EXIT LIGHTS AT PASSENGER SEATS 22C, 22D, AND 23C ARE INOPERATIVE.  REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT 12WL PER AMM 33-51-38, WIRE HARNESS 7261VC7 PER AMM 33-51-00 (AALA201712049025),  AND REPAIRED WIRE HARNESS 7261VC8 PER ESPM 20-43-10 (AALA201712049026).  OPERATIONAL CHECK GOOD.

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