# SDR CG9S2016022600097

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2016
- Submitted: February 26, 2016
- Operation: General aviation
- Aircraft: N595PU
- Make and model: Cirrus SR20
- Registry model: [Cirrus SR20](https://openairdocs.org/model/cirrus-design-sr20) (OpenAirDocs)
- Aircraft serial: 2054
- Aircraft time: 2,468 hours
- Engine: Cont IO360ES
- Engine time: 286 hours
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Alternator
- Part number: 653344
- Part serial: HA291512
- Condition: Inoperative
- Part time: 286 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CG9S2016022600097

## Discrepancy

DURING A TRAINING FLIGHT, IT WAS NOTED THE NR 2 ALTERNATOR WAS NOT FUNCTIONING.  INVESTIGATION BY MAINTENANCE DISCOVERED THE FIELD WAS OPEN ON ALTERNATOR.  DURING REPLACEMENT IT WAS NOTED THE COOLING FAN AREA WAS COVERED WITH A DUSTING OF BRASS, COPPER COLORED PARTICLES, WHICH COULD BE FROM THE BRUSH SLIP RINGS. ALTERNATOR WAS COVERED UNDER WARRANTY, SO FURTHER DISASSEMBLY AND INVESTIGATION WAS NOT DONE.

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