# SDR AALA202111027863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2021
- Submitted: November 2, 2021
- Operation: Air carrier
- Aircraft: [N177US](https://openairdocs.org/aircraft/N177US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1517
- Aircraft time: 66,751 hours, 25,255 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: None
- Condition: None
- 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/AALA202111027863

## Discrepancy

AIRCRAFT WAS GROUNDED: WHILE ACCOMPLISHING R1 SLIDE CHANGE THE OPERATIONAL TEST OF EMERGENCY LIGHTING SYSTEM. FAILED CIDS FAULTS EMERGENCY POWER SUPPLY UNIT INT LOAD EXIT R AND L. OCCURRED. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)

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