NONE · HALL LESTER R LEGACY · 2023-07-20 · Rochester, MN, USA
Event
NTSB number
ENG23LA034
Event ID
20230815192877
Type
Incident
Date
2023-07-20
Location
Rochester, MN, USA
Coordinates
44.057343, -92.506234
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
HALL LESTER R
Model
LEGACY
Registration
N707MM
FAR Part
091
Engines
1
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
Mechanically distressed reduction gears causing an engine overspeed and turbine blade tensile overload and subsequent uncontainment. Contributing to the uncontainment was the operator’s use of the engine after knowingly purchasing the engine in an unserviceable condition and only conducting a periodic inspection before flight.