# SDR SWAA2018010218707

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2017
- Submitted: January 3, 2018
- Operation: Air carrier
- Aircraft: [N8303R](https://openairdocs.org/aircraft/N8303R), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36881
- Aircraft time: 20,477 hours, 8,685 cycles
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Control Unit
- Part number: 115195214
- Part serial: 115195204816
- Condition: Faulty
- Location: Cockpit
- Stage of operation: DE
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2018010218707

## Discrepancy

DECLARED EMERGENCY, ON DESCENT LOST STANDBY POWER.  R&R STANDBY POWER CONTROL UNIT PER AMM.

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