# SDR DXTA2026040107457

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 2026
- Submitted: April 1, 2026
- Operation: Air carrier
- Aircraft: [N873QS](https://openairdocs.org/aircraft/N873QS), registered now
- Make and model: Textrn TEXTRON700
- Aircraft serial: 7000130
- Aircraft time: 1,544 hours, 915 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 64300281
- Part serial: G2510894
- Condition: Defective
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026040107457

## Discrepancy

NONE OF THE EMERGENCY LIGHTS ILLUMINATE WHEN SWITCH IS ON  WITH MAIN BATTERIES OFF. LIGHTS OPS NORMAL ALL OTHER CONDITIONS.  REMOVED THE FAULTY NR 1 BATTERY & INSTALLED SERVICEABLE BATTERY  IAW MM 33-50-07. REMOVED FAULTY #2 BATTERYT & INSTALLED SERVICEABLE BATTERY IAW MM 33-50-07. REMOVED FAULTY #3 BATTERY & INSTALLED SERVICEABLE BATTERY IAW  MM 33-50-05. REMOVED FAULTY #4 BATTERY & INSTALLED SERVICEABLE BATTERY IAW MM 33-50-05.  OPS CHKD IAW MM 33-50-00, NO DEFECTS. ALLOWED BATTERIES TO CHARGE FOR AN ADDITIONAL 60 MINS. OPS CHKD LIGHTS IAW MM 33-50-00, NO DEFECTS. REMOVED POWER FROM ACFT. MOVED EMERGENCY LIGHTS SWITCH TO ON & FOUND ALL EMERGENCY LIGHTS ILLUMINATED. MOVED SWITCH TO ARM & LIGHTS REMAINED ILLUMINATED. APPLIED POWER  & FOUND THE EMERGENCY LIGHTS EXTINGUISHED.

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