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Atlas / NTSB / CHI90DEP06

NTSB CAROL · Event

Event CHI90DEP06

1990-07-06 IOLA, Wisconsin, United States Airport · 68C Fatal 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN A STALL/SPIN. FACTORS RELATED TO THE ACCIDENT WERE: THE PILOT'S POORLY PLANNED APPROACH, AND HIS FAILURE TO GO AROUND.

Factual narrative

THE AIRCRAFT WAS OBSERVED TO ENTER A LEFT DOWNWIND FOR RUNWAY 4 AT AN ALTITUDE OF APPROXIMATELY 2000 FT AGL. AT ABOUT THE MID-FIELD POINT, THE POWER WAS REDUCED. A WITNESS RPRTD THE ACFT WAS TOO HIGH TO LAND & THE PLT INITIATED A LEFT TURN TO SPIRAL DOWN. DURING THE SPIRAL, POWER WAS INCREASED AND THE AIRCRAFT ENTERED A SPIN. SUBSEQUENTLY, IT CRASHED ABOUT 150 YARDS SHORT OF THE APPROACH END OF RUNWAY 4. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_CHI90DEP06.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗