# SDR GTIA2021081335925

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2021
- Submitted: August 13, 2021
- Operation: Air carrier
- Aircraft: [N658NK](https://openairdocs.org/aircraft/N658NK), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6736
- Aircraft time: 20,294 hours, 8,877 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- 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/GTIA2021081335925

## Discrepancy

EMERGENCY LIGHTING SYSTEM BATTERY FAILED BITE TEST. EPSU BATTERY REQUIRES REPLACEMENT. SDR REQUIRED-VERIFIED NR 5001092339-0010 EPSU BATTERY 13WL REPLACED IAW AMM 33-51-38-000/400-002-A REV 69. OPC OF THE EPSU THRU BITE CHECK PERFORMED AS PER AMM 33-51-00-710-001 REV 69 TEST OK. SDR GENERATED

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