Insurance costs, mostly.
And people still do fly in the most sickening conditions,
just don't want to do so if they can avoid it. Bushpilots
here are nutters, and fucking clever on the stick.
Smoked up cabin and ground/lake fog is not that unusual of a case.
(
Tahkcalb ω∞ for sigs,
Tue 20 Jan 2009, 5:48,
archived)