# SDR DXTA2026070708696

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 2026
- Submitted: July 7, 2026
- Operation: Air carrier
- Aircraft: [N337QS](https://openairdocs.org/aircraft/N337QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500202
- Aircraft time: 10,902 hours, 8,662 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 7450LS00
- Part serial: 007370
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026070708696

## Discrepancy

DURING ENGINE START THE EMER LT NOT ARM CAS REMAINED ILLUMINATED.  AFTER START THE CAS EXTINGUISHED, HOWEVER THE CABIN EMER LIGHTS REMAINED ILLUMINATED UNTIL THE SWITCH WAS PLACED TO THE OFF POSITION. ATTEMPTED THE GROUND RESET PROCEDURE WITH NO RESULTS.   AC WAS ON GPU POWER AND SHIP POWER CHARGING FOR OVER AN HOUR IN TOTAL. CORRECTIVE ACTION: VERFIED FAULT THEN GAINED ACCESS TO FWD AND AFT. EMER. BATTERIES R & R BOTH FWD & AFT. EMER. BATTERIES WITH REPAIRED UNITS ALL OPS CHECKS GOOD RESTORED ACCESS ITEMS IAW AMM 33-52-01.

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