NONE · AMERICAN EUROCOPTER LLC AS350B3 · 2012-08-18 · Sunburst, MT, USA
Event
NTSB number
WPR12TA364
Event ID
20120821X32707
Type
Accident
Date
2012-08-18
Location
Sunburst, MT, USA
Coordinates
48.885833, -111.89611
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
AMERICAN EUROCOPTER LLC
Model
AS350B3
Registration
N3939A
FAR Part
PUBU
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
The improper installation of the engine-to-main gearbox flex coupling, which resulted in the failure of the flex coupling and a loss of power to the rotor system during takeoff.