NONE · GRUMMAN ACFT ENG COR-SCHWEIZER G-164B · 2014-07-09 · Garrison, ND, USA
Event
NTSB number
CEN14LA358
Event ID
20140714X05310
Type
Accident
Date
2014-07-09
Location
Garrison, ND, USA
Coordinates
47.681667, -101.239166
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
1
Total aboard
1
Aircraft
Make
GRUMMAN ACFT ENG COR-SCHWEIZER
Model
G-164B
Registration
N6648Q
FAR Part
137
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
Excessive wear between the power turbine shaft and quill shaft spline, which led to the disconnection of the power turbine wheel, an overspeed of the power turbine, and the subsequent loss of engine power. Contributing to the accident was maintenance personnel’s failure to detect contaminants in the oil filter during the engine’s recent 100-hour inspection.