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CHI89LA044

1989-01-15 · OSCEOLA, Wisconsin, United States · None · 1 aircraft · Status: Completed

Airport OEO

Aircraft involved

Probable cause & findings

INADEQUATE PREFLIGHT BY THE STUDENT PILOT, INADEQUATE SUPERVISION (TO ASSURE A PROPER PREFLIGHT) BY THE INSTRUCTOR PILOT (CFI), AND WATER CONTAMINATION OF THE FUEL. THE TERRAIN WAS CONSIDERED TO BE A CONTRIBUTING FACTOR. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_CHI89LA044.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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