# SDR DXTA2026091709713

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2026
- Submitted: September 18, 2026
- Operation: Air carrier
- Aircraft: [N588QS](https://openairdocs.org/aircraft/N588QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605721
- Aircraft time: 16,563 hours, 12,528 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 99131
- Part serial: 675
- Condition: Faulted
- 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/DXTA2026091709713

## Discrepancy

WITH THE EMERGENCY LIGHT SWITCH SET TO ARM AND THE PASSENGER SAFETY SWITCH SET TO OFF THE EMERGENCY LIGHT SYSTEM REMAINS ILLUMINATED BOTH INTERIOR AND EXTERIOR. WITH PASS SAFETY SWITCH OFF THE LIGHTS SHOULD BE EXTINGUISHED. CORRECTIVE ACTION FOUND BOTH G SWTICHES TRIPPED AND BATTERIES DISCHARGED. PER MMC THEY REQUESTED BOTH BATTERIES BE REPLACED. REMOVED AND REPLACED THE FORWARD AND AFT BATTERIES IAW TEXTRON MODEL 560 XLS AMM 33-50-01, WITH CUSTOMER SUPPLIED UNITS: FORWARD TESTED, AFT OVERHAULED, OPCRATIONAL CHECKS NORMAL NO FURTHER DEFECTS NOTED.

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