# NTSB Accident CHI01FA329
> **Cessna 414 Riley Super-8** · 2001-09-29 · Marshfield, WI, USA · FATL
## Event
- **NTSB number:** CHI01FA329
- **Event ID:** 20011004X02035
- **Type:** Accident
- **Date:** 2001-09-29
- **Location:** Marshfield, WI, USA
- **Coordinates:** 44.660743, -90.170227
## Injuries
- **Highest injury:** FATL
- **Fatal:** 3
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** Cessna
- **Model:** 414 Riley Super-8
- **Registration:** N414NG
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain adequate airspeed (Vmc) which resulted in a loss of control.   Contributing factors were the improper in-flight planning/decision not to land at a closer airport and the lack of recent experience in multiengine airplanes by the pilot-in-command, the cylinder head separation, the inadequate manufacturing process, and the lack of continued airworthiness instructions relating to the Riley Super-8 STC.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI01FA329) · AI Analytics · CC0 1.0*