NONE · Cessna 525 · 1996-08-29 · MILWAUKEE, WI, USA
Event
NTSB number
CHI96IA320
Event ID
20001208X06434
Type
Incident
Date
1996-08-29
Location
MILWAUKEE, WI, USA
Coordinates
42.980503, -87.900192
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
3
Total aboard
3
Aircraft
Make
Cessna
Model
525
Registration
N123JN
FAR Part
091
Engines
2
Damage
MINR
Conditions
Light
DAYL
Weather
VMC
Probable cause
an uncontained failure of a high pressure turbine disk blade retention post due to fatigue. A factor relating to the incident was: inadequate design of the high pressure turbine disk. Fretting on the leading side of the lobe near the fracture origin may have contributed to premature initiation of the fatigue.