# SDR 2011FA0000726

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2011
- Submitted: November 2, 2011
- Operation: General aviation
- Aircraft: [N87HA](https://openairdocs.org/aircraft/N87HA), registered now
- Make and model: Diamon DA20-A1
- Registry model: [Diamon DA20-A1](https://openairdocs.org/model/diamond-aircraft-ind-da20-a1) (OpenAirDocs)
- Aircraft serial: 10086
- Aircraft time: 5,810 hours
- Engine: Rotax ROTAX912S3
- Engine time: 1,515 hours
- Propeller: Hofman HOV352F
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Attach Bolt
- Part number: TAS108
- Condition: Sheared
- Location: Valve Cover
- Part time: 1,515 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: D, K
- Precautionary procedure: B, E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000726

## Discrepancy

THE SINGLE BOLT THAT HOLDS VALVE COVER ON THE NR 2 CYLINDER SHEARED IN FLIGHT.  ALL OIL LEFT THE ENGINE. EMERGENCY LANDING IN A FIELD.

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