# SDR CALA2025071706656

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2025
- Submitted: July 17, 2025
- Operation: Air carrier
- Aircraft: [N16234](https://openairdocs.org/aircraft/N16234), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28946
- Aircraft time: 78,580 hours, 29,289 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Discharged
- 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/CALA2025071706656

## Discrepancy

EMERGENCY CABIN LIGHTS M1670 FAILS BATTERY CAPACITY CHECK.  REPLACED BATTERY PACK M1670 IAW B737 AMM 33-51-06-960-805. OPS CHECK GOOD.  BATTERY PACK FAILED FUNCTIONAL CHECK DURING D CHECK IN RFD.

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