NONE · MOONEY M20K · 2015-06-21 · Sheboygan, WI, USA
Event
NTSB number
CEN15LA279
Event ID
20150622X70018
Type
Accident
Date
2015-06-21
Location
Sheboygan, WI, USA
Coordinates
43.769721, -87.851669
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
1
Total aboard
1
Aircraft
Make
MOONEY
Model
M20K
Registration
N1168Z
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
IMC
Probable cause
Oil starvation due to preignition in the No. 5 cylinder as a result of failed spark plugs; the top and sides of the piston head were eroded, which allowed the exhaust gases caused by the preignition to pressurize the crankcase and force engine oil out of the breather tube.