Originally Posted by
AerocatS2A
We are good for up to 7 kts additives but beyond that we have to add a percentage to the landing distance required. Max total additives (gusts and icing) 14 knots. That's for a BAe146 which is a bit different due to its low speed wing.
Also a part 25 aeroplane like a 146 has a lot of inertia, and a high approach speed. The first creates windshear risk, and the second makes say 10kn speed increment a relatively small percentage change.
A light aircraft with a lower approach speed, and without the susceptibility to windshear doesn't want the same magnitude of speed change, if any at all.
G