# SDR 2021FA0000354

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2021
- Submitted: December 3, 2021
- Operation: General aviation
- Aircraft: [N425MT](https://openairdocs.org/aircraft/N425MT), registered now
- Make and model: Cirrus SR22
- Registry model: [Cirrus SR22](https://openairdocs.org/model/cirrus-design-sr22) (OpenAirDocs)
- Aircraft serial: 4201
- Aircraft time: 1,698 hours
- Engine: Cont IO550N
- Engine time: 1,698 hours
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: None
- Condition: None
- Component: Piston Pin, Cont, IO550N
- Component part number: 630046
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021FA0000354

## Discrepancy

PISTON PIN BROKE IN TWO, INSIDE BREAKAGE KEPT PARTS INTACT.  P/N 630046 FOUND DURING CYLINDER EXCHANGE FOR LOW COMPRESSION CYLINDER, UNRELATED TO PIN FAILURE. PICTURES ON REQUEST AVAILABLE.

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