# NTSB Accident WPR18FA150
> **MORRISON MARVIN E JR RV 6A** · 2018-05-27 · Petaluma, CA, USA · FATL
## Event
- **NTSB number:** WPR18FA150
- **Event ID:** 20180527X02344
- **Type:** Accident
- **Date:** 2018-05-27
- **Location:** Petaluma, CA, USA
- **Coordinates:** 38.265277, -122.611663
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MORRISON MARVIN E JR
- **Model:** RV 6A
- **Registration:** N4269Y
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A partial loss of engine power during initial climb after takeoff due to a loose left magneto, and the pilot's decision to turn back to the airport and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall/spin and 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=WPR18FA150) · AI Analytics · CC0 1.0*