# SDR DXTA2025061803929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 16, 2025
- Submitted: June 18, 2025
- Operation: Air carrier
- Aircraft: [N416QS](https://openairdocs.org/aircraft/N416QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500443
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 7450LS00
- Part serial: 006351
- Condition: Defective
- Location: Zone 200
- 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/DXTA2025061803929

## Discrepancy

AFTER ENGINE START AND WITH EMERGENCY LIGHT SWITCH IN ARM SOME OF THE CABIN EMERGENCY LIGHTS ILLUMINATED. MOVING SWITCH TO OFF DID NOT EXTINGUISH THE LIGHTS. A COUPLE CEILING LIGHTS WERE ILLUMINATED AND DOOR STEP LIGHTS. EXIT SIGNS WERE NOT ILLUMINATED. CORRECTIVE ACTION: REPLACED EMERGENCY BATTERIES IAW EMB-505S AMM 33-52-1 OPS CHECK GOOD

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