CHI98LA105
1998-03-13 · FOND DU LAC, Wisconsin, United States · Minor · 1 aircraft · Status: Completed
Airport FLD
N777MX has since been reassigned. It is now registered to a different aircraft (CESSNA 650, built 1984), which was not involved in this event.
Aircraft involved
Probable cause & findings
the pilot's misjudged weather evaluation . Factors were turbulence, the pilot's inability to attain a proper climb rate, unsuitable terrain encountered in the landing area, and crops.
Factual narrative
On March 13, 1998, at 1315 central standard time, an Aero Commander 680FLP, N777MX, registered to AFK Corporation, of Ripon, Wisconsin, sustained substantial damage during an emergency landing one-quarter mile south of the Fond Du Lac County Airport, near Fond Du Lac, Wisconsin. The airplane initiated a takeoff from runway 18 (5,940' x 100' dry snow/asphalt), in instrument meteorological conditions with the intended destination of Washington, DC. The instrument rated commercial pilot said the airplane encountered turbulence and did not accelerate as expected. He elected to make the precautionary landing in a corn field. The pilot and two passengers reported no injuries. One passenger received minor injuries. The corporate CFR 14 Part 91 flight was operating on an IFR flight plan. The flight was originating at the time of the accident. The pilot stated in his written statement, "Experienced very rough and turbulent air during the climb to approximately 200 feet AGL, airspeed was very erratic jumping around from 115 to 100 miles per hour, then experienced extreme side shear from the right." He indicated that with full power, continued flight was not possible. He extended the landing gear and executed a landing in a cornfield one-quarter mile off the departure end of runway 18. A weather observation at the airport taken 23 minutes after the accident indicated a wind of 190 degrees at 14 knots with gusts to 21 knots. The airplane took off on runway 18 with winds reported to be 190 degrees at 14 knots with gusts to 21 knots. The pilot said that during initial climb to 200 feet AGL, he encountered turbulence and was unable to maintain flight. He made a precautionary landing in a cornfield about one-quarter mile off the end of the runway. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1998_CHI98LA105.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
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Related research
Matched on aircraft type or causal vocabulary (turbulence). All research papers
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- arXiv 2024 · arXiv preprint Does small-scale turbulence matter for ice growth in mixed-phase clouds?
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