Hi,
i need someone help in this scenario :
FL300=270/114kt -45C
FL240=280/100kt -30C
Need to find out FL 290=?
Wind Direction = 280-270 = 10 Degree different
10/6000ft = 1.6
1.6 * 5000ft = 8000
wind Direction = 272 Degree
Speed = 114-100= 14 kts Different
14kt / 6000ft = 2.3 * 5000ft = 11.6kt which is 12 kt
Temp = 15 C different / 6000 = 2.5 * 5000 = 12.5 which is 13 C
so 13 + 30 = 43 which is -43
FL 290= 272/112 Kts - 43 C
now my question is:
when we got wind direction we we done 280-8 to get 272
when we got the speed we done 100kt + 12kt = 112 kt
when we got the Temp. we done 13 +30 to get 43
when we use the minus and when we use add + ???
can some one help me ?
thank you
