3 fatal · BOEING VERTOL BV-107 II · 1996-10-04 · CANBY, OR, USA
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.