I have been flying N165CC for about a year now and never latch the right side window into the open position in flight. This was the advice of the dealer I purchase the plane from. His logic was at certain angles of attach the window could break. So his instruction was to always just leave the window basically flapping in the breeze. But many of the promotional and owner videos and pictures do show the right side window latched during flight. My question is does anyone have any opinions about this, i.e when you can or can't latch the right or left window in the open position during flight.....It would be nice if the POH discussed this I did not see any mention guidelines for having the door or windows open during flight.