# NTSB Accident MIA95LA078
> **HUGHES 500C** · 1995-02-20 · KEY LARGO, FL, USA · NONE
## Event
- **NTSB number:** MIA95LA078
- **Event ID:** 20001207X03019
- **Type:** Accident
- **Date:** 1995-02-20
- **Location:** KEY LARGO, FL, USA
- **Coordinates:** 25.079421, -80.439201
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** HUGHES
- **Model:** 500C
- **Registration:** N7172Z
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's misjudgment of altitude and failure to apply collective cushioning pitch during an autorotation resulting in a hard landing. Contributing to the accident was a total loss of engine power due to a loose coupling B-nut on the pneumatic fuel control system, and improper maintenance inspection of helicopter by unknown maintenance personnel.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA95LA078) · AI Analytics · CC0 1.0*