# NTSB Accident ERA18LA163
> **VANS RV4** · 2018-06-07 · Butler, PA, USA · MINR
## Event
- **NTSB number:** ERA18LA163
- **Event ID:** 20180610X83955
- **Type:** Accident
- **Date:** 2018-06-07
- **Location:** Butler, PA, USA
- **Coordinates:** 40.756111, -79.950553
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** VANS
- **Model:** RV4
- **Registration:** N7765X
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's improper decision to fly the airplane with a known engine problem and his improper modification of the engine control unit fuel delivery software, which led to the engine running too lean and resulted in a total loss of engine power during climb.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA18LA163) · AI Analytics · CC0 1.0*