# SDR DXTA2021060443170

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2021
- Submitted: June 4, 2021
- Operation: Air carrier
- Aircraft: [N331QS](https://openairdocs.org/aircraft/N331QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500183
- Aircraft time: 5,860 hours, 4,658 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2021060443170

## Discrepancy

EMERGENCY LIGHTS BATTERY: AFTER TAKEOFF GEAR UP GOT THE EMERGENCY LIGHT NOT ARMED CAS MESSAGE ON THE ELECTRICAL PAGE BOTH BATT 1 & 2 WHERE SHOWING 25.1 AND 25.0 IN YELLOW.  DC BUS 1 WAS NOT POWERING THE EMER BUS. DC BUS 2 WAS NOT POWERING THE CENTRAL BUS HOT BUS 2 WAS POWERING THE EMER BUS. ON LANDING THE BATT VOLTAGE WAS 24.5 &24.6  VOLTS.

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