Can't I eat my ice cream in peace?? At $5AUD each I'm making money if I eat 'em up every sector!
1) A320
2) Oversight mate. I broke my spoon on the rock hard ice cream and got a silver spoon soon after.
3) Characteristic speeds subject to errors of up to 5 kts at altitude. Couple this with conservative nominal weights, Mach effect and buffeting and the errors can be significant. In a practical sense it is most problematic on approach with green dot being just above VFE on exceptional cases.