# NTSB Accident CEN15LA345
> **AIR TRACTOR INC AT 401** · 2015-08-05 · Nekoosa, WI, USA · NONE
## Event
- **NTSB number:** CEN15LA345
- **Event ID:** 20150810X82655
- **Type:** Accident
- **Date:** 2015-08-05
- **Location:** Nekoosa, WI, USA
- **Coordinates:** 44.318054, -89.968612
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** AIR TRACTOR INC
- **Model:** AT 401
- **Registration:** N1539U
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot’s inadequate preflight planning, which resulted in his attempt to take off for the agricultural application flight with the airplane over its maximum gross weight in high-density altitude conditions and led to the airplane’s degraded climb performance and subsequent 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=CEN15LA345) · AI Analytics · CC0 1.0*