# NTSB Accident CHI97LA109
> **Cessna 421C** · 1997-04-21 · PIERRE, SD, USA · NONE
## Event
- **NTSB number:** CHI97LA109
- **Event ID:** 20001208X07687
- **Type:** Accident
- **Date:** 1997-04-21
- **Location:** PIERRE, SD, USA
- **Coordinates:** 44.370586, -100.319961
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Cessna
- **Model:** 421C
- **Registration:** N283PT
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the pilot's inadvertent activation of the number one throttle/power control.  Factors were: the pilot left the cockpit unattended with the engines running and a wet ramp.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI97LA109) · AI Analytics · CC0 1.0*