# NTSB Accident MIA00LA111
> **Hiller UH-12B** · 2000-03-17 · SANFORD, FL, USA · MINR
## Event
- **NTSB number:** MIA00LA111
- **Event ID:** 20001212X20696
- **Type:** Accident
- **Date:** 2000-03-17
- **Location:** SANFORD, FL, USA
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Hiller
- **Model:** UH-12B
- **Registration:** N5304V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's improper collective and cyclic control usage during an emergency descent, following the onset of a 1 to 1 vibration for undetermined reasons, resulting in the helicopter landing hard and rolling over.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA00LA111) · AI Analytics · CC0 1.0*