# SDR DXTA2026101610185

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2026
- Submitted: October 16, 2026
- Operation: Air carrier
- Aircraft: [N850QS](https://openairdocs.org/aircraft/N850QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000178
- Aircraft time: 23 hours, 19 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Discharged
- Location: Zone 200
- Stage of operation: TX
- How discovered: C
- Nature of condition: L
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026101610185

## Discrepancy

EMERGENCY INTERIOR LIGHTS STAYING ON AFTER COMPLETE SHUT DOWN. TRIED TO RESET THE BOXES IN THE COCKPIT BUT UNSUCCESSFUL.   GAINED ACCESS TO THE AFT P-BATTERIES LOCATED IN THE AFT CARGO BAY AND GAINED ACCESS TO THE FWD P-BATTERIES LOCATED IN THE COCKPIT. PERFORMED THE EMERGENCY LIGHTING ADJUSTMENT/TEST IN ACCORDANCE WITH AMM 33-50-00. AFTER A COUPLE OF ATTEMPTS, THE P-BATTERY SWITCH LIGHTS CYCLED FROM ON TO OFF, BUT THE EMERGENCY LIGHTS STAYED ON. PERFORMED A BATTERY CHARGE CYCLE IN ACCORDANCE WITH CE 700 AMM 33-50-00-711. PERFORMED THE AFT L/H P-BATTERY INERTIA SWITCH CHECK AND REPEATED THE EMERGENCY LIGHTING ADJUSTMENT/TEST PER CE 700 AMM33-50-00. NO DEFECTS NOTED.

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