# NTSB Accident SEA08LA207
> **Simpson Amphibious Trike** · 2008-09-23 · Lake Chelan, WA, USA · SERS
## Event
- **NTSB number:** SEA08LA207
- **Event ID:** 20081017X44942
- **Type:** Accident
- **Date:** 2008-09-23
- **Location:** Lake Chelan, WA, USA
- **Coordinates:** 47.866111, -119.942779
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Simpson
- **Model:** Amphibious Trike
- **Registration:** N440LS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to maintain adequate airspeed during the initial climb, which resulted in an inadvertent aerodynamic stall. Contributing to the accident was the pilot's lack of experience in the float-equipped, weight-shift airplane.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA08LA207) · AI Analytics · CC0 1.0*