# SDR DXTA2026090809583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2026
- Submitted: September 8, 2026
- Operation: Air carrier
- Aircraft: [N477QS](https://openairdocs.org/aircraft/N477QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500799
- Aircraft time: 2,453 hours, 1,963 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 7450LS00
- Part serial: 005186
- Condition: Inoperative
- 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/DXTA2026090809583

## Discrepancy

WITH THE EMERGENCY LIGHT SWITCH SELECTED TO THE ARM POSITION THE EMERGENCY LIGHTS REMAIN ON UNTIL THE SWITCH IS SELECTED BACK TO THE OFF POSITION CORRECTIVE ACTION: REMOVED FWD EMERGENCY LIGHTS BATTERY  AND INSTALLED CUSTOMER SUPPLIED REPAIRED BATTERY  IAW AMM 33-52-01. PERFORMED OP'S CHECK. OP'S CHECK GOOD, NO DEFECTS NOTED,

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