# NTSB Accident WPR21LA137
> **PIPER PA-18-150** · 2021-03-17 · Three Forks, MT, USA · NONE
## Event
- **NTSB number:** WPR21LA137
- **Event ID:** 20210318102784
- **Type:** Accident
- **Date:** 2021-03-17
- **Location:** Three Forks, MT, USA
- **Coordinates:** 45.878388, -111.56889
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** PIPER
- **Model:** PA-18-150
- **Registration:** N82479
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s improper landing flare, which resulted in a loss of directional control, runway excursion and impact with terrain.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR21LA137) · AI Analytics · CC0 1.0*