# SDR DXTA2026031207195

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2026
- Submitted: March 12, 2026
- Operation: Air carrier
- Aircraft: [N423QS](https://openairdocs.org/aircraft/N423QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500468
- Aircraft time: 6,988 hours, 5,414 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Faulted
- Location: Zone 200
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026031207195

## Discrepancy

WHEN MOVING EMER LIGHT SWITCH TO ARM POSITION ALL EMER LIGHTS COME ON AND STAY ON. THEY REMAIN ON WHEN MOVING TO THE ON POSITION AND BACK TO THE ARM POSITION.   REMOVED AND REPLACED FWD AND AFT EMERGENCY BATTERIES WITH REPAIRED UNITS AS NEEDED. PERFORMED OPS CHECKS WITH SATISFACTORY RESULTS. MAINTENANCE PERFORMED IAW P300 AMM 33-52-01. NO FURTHER ACTION REQUIRED AT THIS TIME. PN ON/OFF: 7450L5-00

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