# NTSB Accident CEN21LA425
> **KOLB Mark III** · 2021-09-14 · Steamboat Springs, CO, USA · SERS
## Event
- **NTSB number:** CEN21LA425
- **Event ID:** 20210917103901
- **Type:** Accident
- **Date:** 2021-09-14
- **Location:** Steamboat Springs, CO, USA
- **Coordinates:** 40.49427, -106.98277
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** KOLB
- **Model:** Mark III
- **Registration:** N4365E
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN21LA425) · AI Analytics · CC0 1.0*