# NTSB Accident WPR11LA288
> **AIR TRACTOR INC AT-502** · 2011-06-25 · Lewistown, MT, USA · NONE
## Event
- **NTSB number:** WPR11LA288
- **Event ID:** 20110627X43933
- **Type:** Accident
- **Date:** 2011-06-25
- **Location:** Lewistown, MT, USA
- **Coordinates:** 47.1725, -109.671386
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** AIR TRACTOR INC
- **Model:** AT-502
- **Registration:** N1022N
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The fatigue fracture and separation of the fuel bypass line, which resulted in a total loss of engine power.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR11LA288) · AI Analytics · CC0 1.0*