Originally Posted by
Rabbit 1
Bird strike windshield strength? Exceed 250 below 10 at your own peril if this is the case.
That's entirely up to the design of your aircraft. The 250kias limit is for see and avoid. A bird will go through most light aircraft windscreen at 100kts. In class C jets are regularly above 250kias below 10k feet.
PS it's not usually the windscreen that's the problem on larger faster aircraft, it's if it hits the surrounding metal structure.