# SDR ASAA2020010831800

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2020
- Submitted: January 9, 2020
- Operation: Air carrier
- Aircraft: [N237AK](https://openairdocs.org/aircraft/N237AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36357
- Aircraft time: 14,327 hours, 4,762 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020010831800

## Discrepancy

EMERGENCY LIGHTS COMMON TO L2 DOOR BATTERY PACK DISCHARGE CHECK FAILED. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY AND OPS CHECK GOOD IAW ASA B737-900 AMM 33-51-06.

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