Oct 21, 2004
Accident
Substantial Lake Michigan
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
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.
NTSB CHI05MA011