# SDR 2021FA0000157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2021
- Submitted: May 26, 2021
- Operation: General aviation
- Aircraft: [N408QS](https://openairdocs.org/aircraft/N408QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500408
- Aircraft time: 3,421 hours, 2,681 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 6450LS00
- Part serial: 002228
- Condition: Failed
- Location: Emergency Lights
- Part time: 3,421 hours, 2,681 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021FA0000157

## Discrepancy

EMERGENCY LIGHTS IN CABIN BEGAN FLICKERING IN FLIGHT. AFTER LANDING, TROUBLESHOOTING REVEALED A FAILED EMERGENCY LIGHTS BATTERY. BATTERY ASSEMBLY WAS REPLACED WITH NEW AND NO FURTHER DEFECTS WERE NOTED. THIS REPORT SUBMITTED TO COMPLY WITH PART 135 OPERATOR'S GENERAL MAINTENANCE MANUAL REQUIREMENTS.

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