Which type of weather can only be directly observed during flight and then reported in a PIREP?
A.Turbulence and structural icing.
B.Jetstream-type winds and icing.
C.Level of the tropopause and turbulence.
正确答案是A
Which type of weather can only be directly observed during flight and then reported in a PIREP?
A.Turbulence and structural icing.
B.Jetstream-type winds and icing.
C.Level of the tropopause and turbulence.
正确答案是A