# NTSB Accident GAA16CA419
> **CESSNA 172** · 2016-08-02 · Lewiston, MT, USA · NONE
## Event
- **NTSB number:** GAA16CA419
- **Event ID:** 20160806X22308
- **Type:** Accident
- **Date:** 2016-08-02
- **Location:** Lewiston, MT, USA
- **Coordinates:** 47.116943, -109.376388
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** CESSNA
- **Model:** 172
- **Registration:** N734GM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's failure to ensure that his seat was adjusted and locked, which resulted in his seat sliding aft during the takeoff roll, and the subsequent loss of directional control and runway excursion.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=GAA16CA419) · AI Analytics · CC0 1.0*