# SDR CALA2026042215606

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2026
- Submitted: April 22, 2026
- Operation: Air carrier
- Aircraft: [N17301](https://openairdocs.org/aircraft/N17301), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67554
- Aircraft time: 11,285 hours, 3,803 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: No Test
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026042215606

## Discrepancy

POWER SUPPLY - BATTERY PACK CAPACITY CHECK POWER SUPPLY BATTERY PACK CAPACITY CHECK - EMERGENCY LT BATTERY PACK M1673 FAILS CAPACITANCE CHK REMOVED AND REPLACED BATTERY PACK M1673 REF MM 33-51-06-960-802 OPS CHK GOOD.

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