Casualties unknown

1991-04-09: Beech F.33A (N8012T) — Truckaline Suspension Centers — Chippewa Falls, WI

Chippewa Falls, WI, US

On April 9, 1991, a Beech F.33A (registration N8012T) operated by Truckaline Suspension Centers was involved in an aviation accident near Chippewa Falls, WI. Investigators recorded the probable cause as: THE FIRST PILOT'S CONTINUED FLIGHT IN KNOWN ADVERSE WEATHER. FACTORS IN THE ACCIDENT WERE THE FIRST PILOT'S POOR WEATHER EVALUATION, THE SECOND PILOT'S COMPLACENCY AND THE FIRST PILOT'S SELF INDUCED PRESSURE TO COMPLETE A CHECKOUT IN MODEL. 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

Two instrument-rated pilots on a checkout flight encountered icing conditions. The aircraft, configured for landing, struck trees in a shallow descent while circling for the opposite runway.

Incident Overview

Two instrument-rated pilots were conducting a checkout flight, intended to familiarize the first pilot with the aircraft model. The weather conditions at the time included temperatures near freezing, low ceilings, and low visibility in precipitation. The first pilot filed an IFR flight plan for a 30-minute local flight.

Flight Details

After becoming airborne, the flight twice amended its cruise altitude and twice changed its destination. The aircraft eventually returned to the origin airport for an approach. During the flight, the pilot reported having "quite a bit of ice" before receiving clearance for the approach.

Final Maneuver and Impact

The aircraft, configured to land, entered a shallow descent while circling from the approach course to the opposite runway. It subsequently flew into trees in an upright attitude. Examination of the engine controls revealed they were in the full forward position, and evidence indicated that engine power was present at the time of impact.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X16748. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.