MINR · OTT 601XL-B · 2017-03-31 · The Dalles, OR, USA
Event
NTSB number
WPR17LA082
Event ID
20170401X82718
Type
Accident
Date
2017-03-31
Location
The Dalles, OR, USA
Coordinates
45.618057, -121.167503
Injuries
Highest injury
MINR
Fatal
0
Serious
0
Minor
2
Uninjured
0
Total aboard
2
Aircraft
Make
OTT
Model
601XL-B
Registration
N610TT
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
A partial loss of engine power due to the reverse bending fatigue failure of the propeller hub bolts, which resulted from the bolts not fitting tightly into the propeller hub holes. Also causal was the pilot's decision to use improper bolts for this type of installation/operation.