# SDR 2026FA0000520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 15, 2026
- Submitted: June 17, 2026
- Operation: General aviation
- Aircraft: [N908WM](https://openairdocs.org/aircraft/N908WM), registered now
- Make and model: Cirrus SR20
- Registry model: [Cirrus SR20](https://openairdocs.org/model/cirrus-design-sr20) (OpenAirDocs)
- Aircraft serial: 10263
- Aircraft time: 606 hours
- Engine: Lyc AEIO360A1B6
- Engine time: 606 hours
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Alternator
- Part number: ES702423
- Part serial: HY061737
- Condition: Seized
- Location: Engine
- Part time: 606 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: H, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000520

## Discrepancy

FLIGHT CREW REPORTED ALTERNATOR 2 FAILURE FOLLOWED BY STRONG BURNING SMELL IN CABIN.  ALTERNATE AIRPORT WAS USED WITH AN EMERGENCY LANDING DECLARED.  THE ROOT CAUSE OF THE PROBLEM WAS INTERNAL FAILURE OF ALTERNATOR 2 BEARING CAUSING COMPLETE SEIZURE OF ROTATION.  ALTERNATOR 2 DRIVE BELT SLIPPED ALONG DRIVE PULLEY CAUSING EXTREME HEAT BUILDUP WHICH RESULTED IN BELT AND PULLEY FAILURE.  BURNING ODOR IN CABIN WAS CAUSED FROM EXCESSIVE FRICTION ALONG BELT AND PULLEY.

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