Jul 31, 1991
Accident
Destroyed SILICA, KS
Injuries2 fatal
Phase of Flight-
ConditionsVMC
OperationFAR 135
Probable Cause
THE FAILURE OF BOTH PILOTS TO MAINTAIN ADEQUATE SEPARATION DURING FORMATION FLIGHT. RELATED FACTORS ARE OVERCONFIDENCE IN PERSONAL ABILITY AND POOR PLANNING/DECISION.
NTSB CHI91FA235