# SDR DXTA2025072804348

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2025
- Submitted: July 28, 2025
- Operation: Air carrier
- Aircraft: [N390QS](https://openairdocs.org/aircraft/N390QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500328
- Aircraft time: 8,433 hours, 6,602 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2025072804348

## Discrepancy

DURING CRUISE THE EMERGENCY LIGHTS (WHILE IN THE ARM POSITION) PROCEEDED TO STAY ILLUMINATED AND THEN CONTINUOUSLY FLICKER. REMOVED AND REPLACED #1 FWD & #2 AFT EMERGENCY BATTERY REF EMS PHENOM 300 MM 33-52-01, OPS CHECKS GOOD AT THIS TIME NO DEFECTS NOTED

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