# SDR SWAA2019122339884

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2019
- Submitted: December 23, 2019
- Operation: Air carrier
- Aircraft: [N253WN](https://openairdocs.org/aircraft/N253WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32511
- Aircraft time: 46,754 hours, 27,714 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Control Unit
- Part number: 762185H
- Part serial: AAA6004965
- Condition: Faulted
- Location: Nr 1 Generator
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2019122339884

## Discrepancy

DIVERTED AND DECLARED AN EMERGENCY.  SOURCE OFF GENERATOR NR 1 ILLUMINATED IN FLIGHT.  R&R THE NR 1 GENERATOR CONTROL UNIT IAW AMM.

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