V4I1F4F4E1D2
16 points
VIFFED is validvalid
VIFF, to change direction abruptly of a vertical take-off aircraft [v]
VIFF, to change direction abruptly of a VTOL aircraft [v]
VIFF, to change direction abruptly of a vertical take-off aircraft [v]
VIFF, to change direction abruptly of a VTOL aircraft [v]