# SDR DXTA2026092309808

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2026
- Submitted: September 23, 2026
- Operation: Air carrier
- Aircraft: [N453QS](https://openairdocs.org/aircraft/N453QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500683
- Aircraft time: 4,276 hours, 3,363 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 7450LS00
- Part serial: 005365
- Condition: Defective
- Location: Zone 200
- Stage of operation: CR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026092309808

## Discrepancy

WHILE ESTABLISHED IN CRUISE AT 41,000 FT, THE CABIN ENERGENCY LIGHTS ILLUMINATED.  AFTER THEY TIMED OUT, THEY ILLUMINATED AGAIN.  THIS PROCESS REPEATED THROUGHOUT THE FLIGHT. CORRECTIVE ACTION: REPLACED BATTERIES. OPS CHECK GOOD. IAW EMB505 MM 33-52-01

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