Jeff,

I have flown my 320 for up to 5.5 hours, at altitude, with no shirt and in the sun. I have never been able to feel any effect of the sun.

I am a fair skinned Dane-German but tan easily. Sun exposure, if not excessive, is good for you.

My canopy has just the slightest of tint.

see: http://www.dynacomm.us/lorn/

Lorn

> From: "Jeffrey Liegner, MD" <liegner@embarqmail.com>
> Date: June 5, 2010 10:10:22 PM EDT
>
> ...
>
> I noticed the other day that my transition lenses were ~half tinted while flying in some sun inside my air conditioned LIVP at FL210, so UV must be penetrating the thick acrylic canopy material.  This is not the case inside a car.
>
> Being a fair skinned irish-german, I slather 85+ SPF Neutrogenia lotion on regularly and daily, but always felt that inside the cockpit (or car) that my exposure was minimum.  This suggests that long flights might justify reapplication of sun block.
>
> Manufactures of acrylic canopies can choose to add UV filters to enhance the filtration above 300nm.
>
> Just sharing an observation to my fellow Lancair pilots.
>
> Jeff L
--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan