Continued VFR Into IMC

It’s a long-term problem and, despite training and warnings, too many pilots still become its victim.

Joseph E. (Jeb) Burnside

Friday, February 21, 2025 at 05:00 AM ET

Verified

Key Takeaways:

Continued Visual Flight Rules (VFR) flight into Instrument Meteorological Conditions (IMC) is a common and often fatal cause of general aviation accidents, typically leading to loss of control or controlled flight into terrain.
These accidents often arise from a chain of factors including neglecting preflight weather briefings, succumbing to external pressures, and a lack of instrument proficiency or overconfidence.
A fatal accident involving a commercial pilot/flight instructor illustrated these dangers, as the pilot continued into IMC without a weather briefing, attempted a turn over mountainous terrain, and ultimately collided with the ground.
Prevention emphasizes obtaining thorough preflight weather briefings, resisting external pressures, honestly assessing pilot skill limitations, and seeking continuous training for instrument conditions and aircraft systems.

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Over the years I’ve been paying attention to such things, one of the most common accident causes among general aviation operations is continued VFR flight into instrument conditions, typically followed by in-flight loss of control (LOC-I) or controlled flight into terrain (CFIT). Or both. It’s long been a sobering, go-to, all-encompassing crash finding among accident investigators.

Improved flight instrumentation and situational awareness devices—along with reliable autopilots for those VFR-only pilots willing to break a few rules—seem to have reduced their frequency over the years, especially since the days when the typical personal airplane lacked either a full set of flight instruments or reliable navigation equipment. But VFR-into-IMC accidents still happen and, when they do, they’re more likely than many other accident causes to be fatal.