# NTSB Accident ERA12LA422
> **MOONEY M20J** · 2012-06-28 · Mc Kinnon, TN, USA · SERS
## Event
- **NTSB number:** ERA12LA422
- **Event ID:** 20120629X90208
- **Type:** Accident
- **Date:** 2012-06-28
- **Location:** Mc Kinnon, TN, USA
- **Coordinates:** 36.316665, -87.916664
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** MOONEY
- **Model:** M20J
- **Registration:** N174JB
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The separation of the piston connecting rod from the crankshaft due to inadequate installation from a mechanic, resulting in a total loss of engine power.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA12LA422) · AI Analytics · CC0 1.0*