FLIGHT FINDINGSAVIATION OCCURRENCE MAP
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Into the cloud: VFR flight into instrument conditions

Flights under visual flight rules - the pilot navigating by looking outside - that continued into cloud, fog or low visibility. Without a horizon a pilot without instrument training can lose control within minutes, which is why so many records here are fatal.

From 2008 the NTSB codes this as the defining event, from 1982 to 2007 as "VFR flight into IMC", and before 1982 as a cause or factor worded "continued VFR flight into adverse weather conditions"; all three are here. Records where only the narrative says so are not.

4,370 occurrences, 1948 to 2025 · 3,599 fatal, 8,071 deaths

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1940s
1960s
1970s
1980s
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2000s
2010s
2020s
Occurrences per decade

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