Originally Posted by
Vertical Freedom
Morning Mitch......it's not just about the power? The 350 has 3 x LongBox blades where the 407 has 4 x R44 blades (equivalent sizing)
in the rarefied atmosphere above 20,000' big corded blades give more bite, much more!
Certainly more blades equals more stability with the greater control power, but I'm not sure how that'll help for a straight in approach to a pinnacle landing onto Sagarmatha @ 29,028'
Personally I cannot say because I only fly the bus but pilots that fly both say it’s better that the 125 at high altitude.
Better performance with equal weight and conditions, tested in Simikot and Khumbu