# NTSB Accident LAX07LA197
> **Evenson Roger J VANS RV-9A** · 2007-06-29 · Tucson, AZ, USA · MINR
## Event
- **NTSB number:** LAX07LA197
- **Event ID:** 20070711X00904
- **Type:** Accident
- **Date:** 2007-06-29
- **Location:** Tucson, AZ, USA
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Evenson Roger J
- **Model:** VANS RV-9A
- **Registration:** N394RS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the loss of engine power during takeoff-initial climb, which resulted from the owner/builder's improper adjustment of the supercharger waste gate valve, that resulted in the failure of the waste gate servo motor.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX07LA197) · AI Analytics · CC0 1.0*