Incident report
Eurocopter BK117 C-2 crash near Sioux Falls, South Dakota, United States
unknown2017-01-26
Summary
The gas generator rear bearing oil scavenge line blocked with coke, which resulted in a failed rear bearing due to an excess of oil lubrication. Contributing to the incident was the operator not completely performing the maintenance items and not utilizing an oil for higher temperatures.
Incident details
Date
2017-01-26
Location
Sioux Falls, South Dakota, United States
Aircraft
Operator
MRIS LLC
Operator type
civil
Fatalities
0
Injuries
0
Probable cause
Weather
VMC
Source
NTSB CAROL ↗43.5783, -96.7481
Quick stats
Severityunknown
Fatalities0
Injuries0
SourceNTSB CAROL
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