# SDR CALA2025120811875

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2025
- Submitted: December 8, 2025
- Operation: Air carrier
- Aircraft: [N71411](https://openairdocs.org/aircraft/N71411), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30128
- Aircraft time: 64,845 hours, 26,924 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD7170100
- Part serial: 158231
- 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/CALA2025120811875

## Discrepancy

EMERGENCY LIGHT ABOVE SEAT ROW 12DEF INOPERATIVE.   REMOVED UNSERVICEABLE BATTERY PACK  AT BATTERY SUPPLY UNIT M1695 IAW AMM 33-51-06. INSTALLED SERVICEABLE BATTERY PACK IAW AMM 33-51-06.  PERFORMED OPS TEST OF NEW SERVICEABLE BATTERY PACK IAW AMM 33-51-06, SUBTASK 33-51-06-710-004. TEST PASSED.

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