I guess I left out a few points, well here goes.
First, if you fly an approach based on an IAS for a given altitude, there is no guarantee that you will fly the same approach twice.
Second, by using the 'by the numbers approach' you will always fly the same glidepath to you LZ (in this case a 3 degree (G/S).
WRT VTOSS, yes it is only applicable to twins, however, if you consider that a single engine has an approach speed that if you go below for a given altitude, then you are S.O.L. if you lose your one stove and are not able to recover airspeed for the impending auto.
So to sum up my reference to VTOSS, a single engine driver can substitute, minimum safe autorotative speed.
To me, a known glidepath to a night site would always be preferable.
By the way, someone said the R22 doesn't have any way to determine distance back, ever heard of GPS?
Cheers, OffshoreIgor
