# NTSB Accident CHI00FA111
> **Bell 222U** · 2000-04-14 · St. Paul, MN, USA · NONE
## Event
- **NTSB number:** CHI00FA111
- **Event ID:** 20001212X20769
- **Type:** Accident
- **Date:** 2000-04-14
- **Location:** St. Paul, MN, USA
- **Coordinates:** 44.970703, -93.200332
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Bell
- **Model:** 222U
- **Registration:** N225LL
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The loss of clamp-up force between the transmission case and the pylon mounted actuator support assembly which resulted in fatigue failure of the threaded studs and dowel pins, the failure of the flight control system, helicopter control not being possible after the flight control failure, and the inadequate maintenance procedures by the company maintenance personnel.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CHI00FA111) · AI Analytics · CC0 1.0*