No fatalities

Hard Landing and Gear Collapse After Icing Encounter at Willmar, Minnesota (N80553)

Willmar, MN, US

On November 29, 1991, a Piper PA-28R-201 (registration N80553) operated by Thunderbird Aniation was involved in an aviation accident near Willmar, MN. No fatalities were reported. Investigators recorded the probable cause as: AN INADEQUATE WEATHER EVALUATION WHICH RESULTED IN FLIGHT INTO ICING CONDITIONS. FACTORS IN THE ACCIDENT WERE THE ICING CONDITIONS AND THE EXCESSIVE DESCENT DURING LANDING. 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 2026-07-04Data APIEditorial standards

A pilot encountered icing conditions, requested IFR approach, then landed hard at Willmar, Minnesota, resulting in a landing gear collapse. Ice accumulation was found on leading edges.

Incident Overview

A pilot reported encountering instrument flight rules (IFR) conditions during a flight. Upon encountering the conditions, the pilot requested a clearance to operate under visual flight rules (VFR) on top. After reaching 8,000 feet mean sea level (MSL) and still remaining within clouds, the pilot requested an IFR approach to Willmar, Minnesota.

Landing Sequence

As the aircraft approached the runway, the pilot crossed the threshold for landing. At that point, the pilot added full flaps and reduced engine power. The aircraft then landed hard, and during the landing impact, the landing gear collapsed.

Post-Landing Examination

Following the incident, an examination of the airframe revealed approximately one-half inch of ice accumulation on the leading edges of the wings and the empennage.

Findings

The pilot's encounter with icing conditions and subsequent hard landing resulted in the collapse of the landing gear.

Frequently asked questions

What happened in the 29 Nov 1991 Piper PA-28R-201 accident near Willmar, MN?

A pilot encountered icing conditions, requested IFR approach, then landed hard at Willmar, Minnesota, resulting in a landing gear collapse. Ice accumulation was found on leading edges.

Were there any fatalities in the 29 Nov 1991 Piper PA-28R-201 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 29 Nov 1991 involved a Piper PA-28R-201, registration N80553, operated by Thunderbird Aniation, at Willmar, MN.

What was the probable cause of the accident?

AN INADEQUATE WEATHER EVALUATION WHICH RESULTED IN FLIGHT INTO ICING CONDITIONS. FACTORS IN THE ACCIDENT WERE THE ICING CONDITIONS AND THE EXCESSIVE DESCENT DURING LANDING.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18436. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.