Mailing List lml@lancaironline.net Message #55336
From: Gary Edwards <gary21sn@hotmail.com>
Sender: <marv@lancaironline.net>
Subject: Re: UV Exposure in Cockpit through Acrylic Canopies
Date: Mon, 07 Jun 2010 19:34:15 -0400
To: <lml@lancaironline.net>
Dermatologists may disagree with you Lorn.  At my last office visit last summer, she suggested I limit my sun exposure especially on top of my shoulders, and "wear a ball cap while flying my plane" (I never have before as I have thick hair.)  I am primarily German and native American (Cherokee) mix (although I claim to be just "plain western American") and have always been an outdoor type.
 
An analogy: overexposure to the sun is akin to using tobacco; the 'player' pays for it later in life.
 
Gary Edwards
LNC2
   
----- Original Message -----
Sent: Monday, June 07, 2010 10:24 AM
Subject: [LML] Re: UV Exposure in Cockpit through Acrylic Canopies

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


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