# SDR DXTA2025111705688

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 14, 2025
- Submitted: November 17, 2025
- Operation: Air carrier
- Aircraft: [N474QS](https://openairdocs.org/aircraft/N474QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500787
- Aircraft time: 1,589 hours, 1,271 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 7450LS00
- Part serial: 006973
- Condition: Defective
- Location: Zone 200
- Stage of operation: AP
- 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/DXTA2025111705688

## Discrepancy

DURING FLIGHT ON THE ARRIVAL NOTICED THE EMERGENCY LIGHTS FLASHING ON AND OFF IN THE CABIN AND PROCEEDED TO FLASH UNTIL LANDING.   REMOVED AND REPLACED NR 1 EMERGENCY BATTERY WITH CUSTOMER PROVIDED REPAIRED PART.   OPS CHECK GOOD AT THIS TIME. NO DEFECTS NOTED. ALL WORK PERFORMED IAW AMM 33-52-01. DUE TO EMERGENCY LIGHTS FLICKERING. REMOVED AND REPLACED NR 2 EMERGENCY BATTERY WITH CUSTOMER PROVIDED REPAIRED PART.  OPS CHECK GOOD. ALL WORK PERFORMED IAW AMM 33-52-01.

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