# NTSB Accident CHI06CA168
> **Schweizer 269C** · 2006-06-17 · Grand Forks, ND, USA · NONE
## Event
- **NTSB number:** CHI06CA168
- **Event ID:** 20060721X00987
- **Type:** Accident
- **Date:** 2006-06-17
- **Location:** Grand Forks, ND, USA
- **Coordinates:** 47.95, -97.183334
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Schweizer
- **Model:** 269C
- **Registration:** N1675U
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The dual student's failure to maintain rotor speed during the recovery from the intentional autorotation and the flight instructor's delayed remedial action.  Contributing factors were the flight crew's intentional autorotation and dual student's misjudged flare.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI06CA168) · AI Analytics · CC0 1.0*