180 degree flare
I have trained these advanced techniques in aug-2008.
Was quite surprised it is possible (with a R44).
Basically it is a "turning flare".
But I consider this a quite tricky maneuver
1. Blade almost "touch" the ground because one is speeking of a quite steep low level turn. So turn should be managed quite precisely.
2. Rolling out of turn and touching down is delicate to avoid lateral movement and risk of roll over, more tricky than just leveling the heli in a straigth line.
Personally I think a 90 degree is more manageable. Technique can also used to avoid a last minute obstacle on the intented landing spot, for instance a cable detected lately.
d3