# SDR DXTA202509040772

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 31, 2025
- Submitted: September 4, 2025
- Operation: Air carrier
- Aircraft: [N480QS](https://openairdocs.org/aircraft/N480QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500809
- Aircraft time: 1,096 hours, 872 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 7450LS00
- Part serial: 001058M
- 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/DXTA202509040772

## Discrepancy

THE EMER LIGHTS STAY ON IN THE ARM POSITION : REMOVED CREW SEATS, REMOVED #1 E-LIGHT POWER UNIT PN 7450LS-00 SN 001058M AND INSTALLED A TESTED UNIT IAW MM 33-52-01-400. REMOVED LAV ACCESS PANEL 242AZ, REMOVED NR 2 E-LIGHT POWER UNIT AND INSTALLED A REPAIRED UNIT IAW MM 33-52-01-400, E-BATTERY OPS TEST & E-LIGHTS OPS TEST IS GOOD AT THIS TIME IAW MM 33-52-00-710 & 33-52-01-710. REINSTALLED CREW SEATS AND LAV PANEL

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