# NTSB Accident CHI98LA277
> **Marchetti AVENGER GRYO PLANE** · 1998-07-24 · MENTONE, IN, USA · SERS
## Event
- **NTSB number:** CHI98LA277
- **Event ID:** 20001211X10526
- **Type:** Accident
- **Date:** 1998-07-24
- **Location:** MENTONE, IN, USA
- **Coordinates:** 41.169685, -86.030006
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Marchetti
- **Model:** AVENGER GRYO PLANE
- **Registration:** N2223A
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the pilot's lack of familiarity with the gyroplane's performance, and his improper in-flight decision to reduce engine power to idle which aggravated the gyroplane's nose down pitch and exceeded the gyroplane's back stick authority.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI98LA277) · AI Analytics · CC0 1.0*