Casualties unknown

1991-01-24: Cessna 320 (N4112T) — Gregory D. Held — Middleton, WI

Middleton, WI, US

On January 24, 1991, a Cessna 320 (registration N4112T) operated by Gregory D. Held was involved in an aviation accident near Middleton, WI. Investigators recorded the probable cause as: THE MAIN LANDING GEAR COLLAPSED DURING LANDING ROLLOUT DUE TO EXTREME COLD TEMPERATURES. A FACTOR RELATED TO THE ACCIDENT WAS A SNOWBANK ADJACENT TO THE RUNWAY. 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 1781061362Data APIEditorial standards

After takeoff, the pilot could not get a gear-up-and-locked indication. After unsuccessful attempts to lower the gear, a fly-by confirmed gear extension. During landing roll, the right main gear collapsed, then the left. The aircraft veered into a snow bank, sustaining substantial damage. Investigation found no mechanical cause; low temperatures may have contributed.

Incident Overview

A pilot reported that following takeoff, the landing gear failed to indicate an up-and-locked position. Attempts to lower the gear were unsuccessful, prompting the decision to return for landing. A fly-by was performed to visually verify that the gear had extended.

Landing and Gear Collapse

During the landing roll, the right main landing gear collapsed, followed shortly by the left main gear. The nose gear remained extended. The aircraft subsequently veered off the runway and entered a snow bank, where it came to rest.

Damage Assessment

The aircraft sustained substantial damage as a result of the gear collapse and runway excursion.

Post-Accident Investigation

Post-accident examination of the aircraft did not reveal a mechanical cause for the gear malfunction. The outside air temperature at the time of the accident was approximately zero degrees Fahrenheit, with temperatures as low as 10 degrees below zero Fahrenheit recorded prior to the event. Such low temperatures could contribute to a gear retraction malfunction.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X16293. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.