# NTSB Accident SEA97FA001
> **BOEING VERTOL BV-107 II** · 1996-10-04 · CANBY, OR, USA · FATL
## Event
- **NTSB number:** SEA97FA001
- **Event ID:** 20001208X06966
- **Type:** Accident
- **Date:** 1996-10-04
- **Location:** CANBY, OR, USA
- **Coordinates:** 45.210819, -122.660484
## Injuries
- **Highest injury:** FATL
- **Fatal:** 3
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 3
## Aircraft
- **Make:** BOEING VERTOL
- **Model:** BV-107 II
- **Registration:** N196CH
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

failure of maintenance personnel to install a cotter pin in a clevis bolt in the flight control system, which resulted in the aft directional and lateral control output pushrod to become disconnected from a bellcrank in the forward portion of the first stage mixing unit.  A factor relating to the accident was the use of an improper bellcrank, which was wider in the clevis area.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA97FA001) · AI Analytics · CC0 1.0*