Originally Posted by woody429924
What does "tip stall" mean?
It's when the outermost tip of a wing stalls, and the rest of the wing doesn't. Many wings have different stall speeds at different positions on the wing. I know we generally think of the wing as a single lift-producing apparatus, but it's not so. Some wings have up-turned tips or different amounts of washout.
The point is, you can get into a position, usually during a turn or at low speeds, where the one tip of the wing is not moving fast enough to produce lift. When that happens, the plane will roll uncontrollably toward the tip that is stalled, and it can be a very dangerous situation. Tip stalls are frequently followed by death spirals.