Originally Posted by
Thomas coupling
................meaning?
NRDK:
A lot of faffing about rather then flying...
From the Preliminary:
Passing through between 100 and 50 ft, he began the cyclic flare in an extended glide configuration, but he "did not get a lot of rpm back."
That seems to indicate that the mishap pilot lost control of his RRPM during his autorotation from 2,000 ft AGL, and allowed the RRPM to decay.