# NTSB Accident ERA20FA074
> **ROBINSON R66** · 2020-01-10 · Mechanicsburg, PA, USA · FATL
## Event
- **NTSB number:** ERA20FA074
- **Event ID:** 20200109X20857
- **Type:** Accident
- **Date:** 2020-01-10
- **Location:** Mechanicsburg, PA, USA
- **Coordinates:** 40.227779, -77.020278
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** ROBINSON
- **Model:** R66
- **Registration:** N450MC
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** NITE
- **Weather:** VMC
## Probable cause

A severe left roll excursion after the onset of pitch and roll oscillations, which were not arrested by the pilot for undetermined reasons. This resulted in main rotor blade contact with the airframe and a subsequent inflight breakup of the helicopter.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA20FA074) · AI Analytics · CC0 1.0*