# SDR 4TXA20201230001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2020
- Submitted: January 4, 2021
- Operation: Air carrier
- Aircraft: N737AT
- Make and model: Boeing 737-7HJ
- Registry model: [Boeing 737-7HJ](https://openairdocs.org/model/boeing-737-7hj) (OpenAirDocs)
- Aircraft serial: 36756
- Aircraft time: 4,380 hours, 1,918 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Part serial: 34161
- Condition: No Test
- Location: Emergency Lights
- Part time: 2,818 hours, 833 cycles
- 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/4TXA20201230001

## Discrepancy

EMERGENCY POWER SUPPLY (BATTERY PACK) M1673 FAILED 15 MIN CAPACITANCE CHECK.

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