# SDR DXTA2022112174230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2022
- Submitted: November 23, 2022
- Operation: Air carrier
- Aircraft: [N443QS](https://openairdocs.org/aircraft/N443QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500616
- Aircraft time: 1,380 hours, 1,036 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 74S0LS00
- Part serial: 005004
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2022112174230

## Discrepancy

EMERGENCY LIGHTS BATTERY: ENROUTE WE NOTICED THE EMERGENCY LIGHTS ILLUMINATED WITH THE SWITCH IN THE ARM POSITION.  REMOVED FWD EMERGENCY BATTERY DUE TO BATTERY DRAIN P/N:74S0LS-00 S/N:005004 AND REPLACED WITH CUSTOMER SUPPLIED NEW EMERGENCY BATTERY P/N: 7450L5--00 S/N: 006541. REMOVED AFT BATTERY DUE TO BATTERY DRAIN P/N: 7450LS-00 S/N:006246 AND REPLACED WITH CUSTOMER SUPPLIED NEW BATTERY P/N: 7450LS-O0 S/N:0065440PS. CHECK GOOD REF EMB505 AMM 33-52-01.  ORIG SUBMISSION DATE:  11/22/2022

---
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.