# SDR 2021FA0000085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2021
- Submitted: March 17, 2021
- Operation: General aviation
- Aircraft: [N404QS](https://openairdocs.org/aircraft/N404QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500401
- Aircraft time: 3,432 hours, 2,667 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 6450LS00
- Part serial: 001335
- Condition: Failed
- Location: Emergency Lights
- Stage of operation: NR
- How discovered: O
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021FA0000085

## Discrepancy

AIRCRAFT CREW REPORTED AN EMERGENCY LIGHT IN ARM POSITION WILL NOT GO OUT.  PERFORMED TROUBLESHOOTING BASED ON THE  AMM CHAPTER 33-52-01 AND FOUND NR 2 EMERGENCY BATTERY LIGHT (AFT)FAULTY.  PERFORMED REPLACEMENT #2(AFT) EMERGENCY LIGHT BATTERY WITH A TESTED BATTERY IN ACCORDANCE WITH AMM CHAPTER 33-52-01. PERFORMED OPERATIONAL TEST OF EMERGENCY LIGHT BATTERY IN ACCORDANCE WITH AMM CHAPTER #33-52-00 WITH NO DEFECTS NOTED.

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