Casualties unknown

Left Gear Separation After Runway Excursion Due to Ice on Windshield (N777RA)

Wheeling, IL, US

On December 5, 1991, a Cessna 421 (registration N777RA) operated by Arr Corp. was involved in an aviation accident near Wheeling, IL. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during the landing roll, which was related to ice crystals on the windshield and a slick runway surface. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-19Data APIEditorial standards

An aircraft veered left during landing roll, striking a snowbank and separating its left main gear after ice crystals obscured the pilot's right-side windshield view.

What happened

During the landing roll, the airplane encountered a slick surface on the runway. The aircraft subsequently veered toward the left side of the pavement. As it moved off the paved surface, the left main landing gear struck a snowbank. This impact caused the airplane to rotate approximately 100 degrees to the left. The aircraft then slid sideways until it came to a complete stop. During this sequence, the left main gear separated from the airframe.

Findings

The pilot reported that ice crystals were present on the right side of the windshield during the landing phase. This obstruction likely contributed to the loss of directional control and the subsequent runway excursion.

Probable cause

The pilot's failure to maintain directional control during the landing roll, which was related to ice crystals on the windshield and a slick runway surface.

Frequently asked questions

What happened in the 5 Dec 1991 Cessna 421 accident near Wheeling, IL?

An aircraft veered left during landing roll, striking a snowbank and separating its left main gear after ice crystals obscured the pilot's right-side windshield view.

What aircraft was involved and where did it happen?

The accident on 5 Dec 1991 involved a Cessna 421, registration N777RA, operated by Arr Corp., at Wheeling, IL.

What was the probable cause of the accident?

The pilot's failure to maintain directional control during the landing roll, which was related to ice crystals on the windshield and a slick runway surface.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18563. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.