# SDR DXTA2023120410227

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2023
- Submitted: December 4, 2023
- Operation: Air carrier
- Aircraft: [N336QS](https://openairdocs.org/aircraft/N336QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500201
- Aircraft time: 7,854 hours, 6,203 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 7450LS00
- Part serial: 006368
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: TX
- How discovered: C
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2023120410227

## Discrepancy

DURING FLIGHT, EMERGENCY LIGHTS OVER THE DOORS AND THREE CENTER AISLE OVERHEAD LIGHTS BEGAN FLICKERING WITH THE SWITCH IN THE ARM POSITION.  REMOVED FORWARD EMERGENCY BATTERY  AND INSTALLED TESTED EMERGENCY BATTERY.  REMOVED AFT EMERGENCY BATTERY AND INSTALLED NEW EMERGENCY BATTERY.  OPS CHECKS GOOD.  ALL WORK ACCOMPLISHED IAW AMM 33-52-01.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.