On Jan 26, 7:59 am, Thomas Borchert
wrote:

through there for a relief tube is starting to sound a lot
better...You mean, regularly spraying a highly corrosive fluid onto
the underside of your plane, which then creeps in through every
opening and seam, sounds good? I don't get it...

Thomas,
Here is an interesting link

"'Corrosive' urine is destroying famous bridge"

http://tinyurl.com/3du6az