NONE · M. C. Thomas STEWART S-51 · 1998-08-05 · JACKSON, CA, USA
Event
NTSB number
LAX98LA258
Event ID
20001211X10894
Type
Accident
Date
1998-08-05
Location
JACKSON, CA, USA
Coordinates
38.349365, -120.770462
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
1
Total aboard
1
Aircraft
Make
M. C. Thomas
Model
STEWART S-51
Registration
N151MT
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
Failure of the propeller governor pulley drive shaft due to a modification made to the system by the owner that included welding a retaining pin to the center of the heat treated drive shaft, which compromised the shaft's design strength margin.