Sep 23, 1991
Accident
Substantial CHICAGO, IL
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 121
Probable Cause
THE FLIGHT CREW'S FAILURE TO MAINTAIN ADEQUATE CLEARANCE FROM OBSTACLES DURING GROUND OPERATIONS. A RELATED FACTOR IS THE FAILURE OF THE DRIVERS OF THE ESCORT VEHICLE AND THE SEMI TRAILER TO FOLLOW ESTABLISHED PROCEDURES AND DIRECTIVES.
NTSB CHI91LA301