Jan 22, 1997
Incident
CHARLESTON, WV
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
a fractured fusion weld in the piston of the roll spoiler servoactuator, which allowed the plug at the base of the piston to separate and jam the piston. A factor relating to the incident was: the inadequate design of the airplane's roll spoiler servoactuator piston.
NTSB CHI97IA075