# NTSB Accident CEN15CA274
> **ENSTROM F 28C** · 2015-06-14 · Romeoville, IL, USA · NONE
## Event
- **NTSB number:** CEN15CA274
- **Event ID:** 20150617X30910
- **Type:** Accident
- **Date:** 2015-06-14
- **Location:** Romeoville, IL, USA
- **Coordinates:** 41.607223, -88.087501
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** ENSTROM
- **Model:** F 28C
- **Registration:** N51778
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The certified flight instructor (CFI) did not maintain directional control during a downwind emergency running landing to soft muddy terrain, which resulted in a dynamic rollover. Contributing to the accident was the CFI's delayed or insufficient remedial action when the pilot receiving instruction did not control the rotor RPM during hovering flight.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN15CA274) · AI Analytics · CC0 1.0*