Anti ice with flaps up or down ?
Question as title, what does your operation do, thinking mainly jet ops ie airbus Boeing but I imagine its similar for most types.
Eg1. on stand with flaps up and it starts snowing ? Apply anti ice ( de ice first) but what about the flaps ? They go down after engine start but they also extend so what about the unprotected sections ?
Eg2 landing in snow. Taxy in with flaps out for an inspection, de ice and anti ice before start but do the flaps go up after de ice or remain out for anti ice ? Does that remove some of the fluid from the surface ?
Be interested to read thoughts or ops.