"Ben Smith" wrote in message ...
"Mike Z." wrote in message
hlink.net...
My 172 M has some pretty big air leaks from behind the plastic pieces at
the top of the windshield. It is coming from behind the
trim piece that encircles the vents and drops down the doorpost.

I don't do it to mine, but I've seen many Cessnas with a slice of duct tape
over each wing [cabin air] vent during the winter months. Anyone in the
group care to comment on that one? It is dangerous or illegal?

Not dangerous or illegal, but probematic as duct tape residue is a real bitch
to get off (believe me, some clown attached a sign to one of my windows with
duct tape).

The other solution I've seen is to just stuff the vent with foam rubber.