Though Moser did not want to speculate on the cause of the crash, he said that 15 percent of accidents in smaller planes are caused by mechanical problems.
The inclement weather on Friday may have been a contributing factor to other problems Revord encountered when he tried to land.
But the weather alone was not enough to cause such a disastrous result, Moser said.
"I would probably fly that approach myself in those same conditions," he said.
Friday's wind and snow shouldn't have made a Cessna 340A go down but could have affected mechanical problems.
SkyWest, a regional carrier for United Airlines, said the planes were Embraer EMB120 Brasilias and Bombardier Canadair Regional Jets.
At Denver International Airport, officials were "baffled" Saturday by cracks that formed during the storm in the windshields of 12 airliners.
A new instrument landing system, which might be installed next year at Council Bluffs Municipal Airport, would help pilots land during stormy weather. The money for the system, $2.45...