# SDR CALA2025100709745

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2025
- Submitted: October 7, 2025
- Operation: Air carrier
- Aircraft: [N35271](https://openairdocs.org/aircraft/N35271), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31589
- Aircraft time: 74,602 hours, 26,598 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: Inoperative
- 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/CALA2025100709745

## Discrepancy

EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK  {B737-33-3-0235} - EMERGENCY AISLE LIGHT NEAR SEAT 27 FED IS INOP.   R & R BATTERY PACK, REMOVED AND REPLACED EMERGENCY AISLE LIGHT ASSY, REF AMM 33-51-03. OPS CK GOOD.

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