# SDR 2014FA0000266

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2014
- Submitted: April 25, 2014
- Operation: General aviation
- Aircraft: [N459DM](https://openairdocs.org/aircraft/N459DM), registered now
- Make and model: Cessna 421C
- Registry model: [Cessna 421C](https://openairdocs.org/model/cessna-421c) (OpenAirDocs)
- Aircraft serial: 421C1084
- Aircraft time: 4,932 hours
- Engine: Cont GTSIO520*
- Engine time: 3,320 hours
- Propeller: Mcauly 3FF32C501
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Nut
- Condition: Missing
- Location: Nr 4 Cylinder
- Part time: 3,320 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2014FA0000266

## Discrepancy

RT ENGINE NR 5 CYLINDER WAS DETERMINED TO HAVE 4 CYLINDER HOLD DOWN NUTS MISSING.  UNABLE TO DETERMINE THE CAUSE.  ENGINE REMOVED AND SENT OUT FOR REPAIR.

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