# NTSB Accident CHI98LA176
> **WATERS VORTEX** · 1998-05-27 · MONROE, WI, USA · MINR
## Event
- **NTSB number:** CHI98LA176
- **Event ID:** 20001211X10028
- **Type:** Accident
- **Date:** 1998-05-27
- **Location:** MONROE, WI, USA
- **Coordinates:** 42.589763, -89.639015
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** WATERS
- **Model:** VORTEX
- **Registration:** N1025Y
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the pilot's failure to maintain rotor RPM.  A factor associated with the accident was the soft terrain on which the gyrocopter touched down.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI98LA176) · AI Analytics · CC0 1.0*