# NTSB Accident MIA01FA206
> **Mitsubishi MU-2B-35** · 2001-08-01 · Hilton Head, SC, USA · FATL
## Event
- **NTSB number:** MIA01FA206
- **Event ID:** 20010807X01617
- **Type:** Accident
- **Date:** 2001-08-01
- **Location:** Hilton Head, SC, USA
- **Coordinates:** 32.164722, -80.733612
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Mitsubishi
- **Model:** MU-2B-35
- **Registration:** N1VY
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Improper maintenance/installation and and inadequate inspection of the airplane's flap torque tube joints during routine maintenance by company maintenance personnel, which resulted in the right flap torque tube assembly coupler becoming detached and the flaps developing asymmetrical lift  when extended, which resulted in an uncontrolled roll,  a descent, and an impact with a tree during approach to land.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=MIA01FA206) · AI Analytics · CC0 1.0*