Interesting to see different interpretations of the application of Gust additives.
From the FCTM
"Add 1/2 of the reported steady headwind component plus the full Gust increment above the steady wind to the reference speed"
"1/2 half of the reported steady headwind component can be estimated by using 50% for a direct headwind, 35% for a 45⁰ crosswind, zero for a direct crosswind"
For those saying you shouldn't use the Gust correction for a 90⁰ gusty crosswind, tell us where that is mentioned in the FCTM?
And how would apply corrections in the following scenarios
Rwy 36
Wind 089/10G20
&
Wind 090/10G20