# SDR N3XR2018111600

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2018
- Submitted: November 16, 2018
- Operation: General aviation
- Aircraft: [N61942](https://openairdocs.org/aircraft/N61942), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 172S10772
- Aircraft time: 3,817 hours
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Alternator
- Part number: 991059111
- Part serial: HS102076
- Condition: Failed
- Location: Engine
- Part time: 146 hours
- Stage of operation: CR
- 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/N3XR2018111600

## Discrepancy

DURING CRUISE FLIGHT, THE CREW OBSERVED AN ALTERNATOR FAILURE ANNUNCIATION. THE DECLARED AN EMERGENCY AND LANDED.INSPECTION REVEALED THAT THE ALTERNATOR HAD FAILED.

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