What's VZF?
 

Sorry once more concerning the absolute basics...
NADP 2 requires above 800' VZF +10-20kt
my guess'd be VS1, stall speed clean + 10-20kt

More commonly known as Minimum Clean Speed or 'Green Dot'. As my collegue rightly suggests, speed with zero flap.

green dot speed makes sense,
but minimum clean speed should be below green dot - on the backside, or am i wrong?
cause this would mean that minimum clean speed was not stall speed clean config

allright, got it!
thanx

Torsten are you employed by a certain UK airline mainly based in T5 by any chance?

In which case I didn't know you were studying... would have invited you on the flight deck!

Vzf means V zero flap, minimum manouvering speed. It should be the same as the green dot.