NONE · Boeing 747-132 · 2004-10-21 · Lake Michigan, USA
Event
NTSB number
CHI05MA011
Event ID
20041028X01714
Type
Accident
Date
2004-10-21
Location
Lake Michigan, USA
Coordinates
42.075553, -86.867225
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
5
Total aboard
5
Aircraft
Make
Boeing
Model
747-132
Registration
N709CK
FAR Part
121
Engines
4
Damage
SUBS
Conditions
Light
NITE
Weather
VMC
Probable cause
The number one engine separated from the airplane during climb due to the uncontained separation of a portion of the second stage turbine disk rim after the second stage turbine vanes contacted the disk. The second stage turbine vanes contacted the second stage turbine disk due to the operator's inadequate inspection of the high pressure turbine module and the improper repair of the module by unknown maintenance personnel.