Originally Posted by
Duchess_Driver
Arr you sure? Which version of the POH? They seem, somewhat high... that’s what I would teach for approach. That puts 1.3vs around 43-47 but can’t check at the moment as away.
Be careful using 1.3x the VS0 to calculate your own Vref. Calibrated airspeed should be used to calculate the proper approach speed at any landing weight and then converted to IAS for practical use. You should do this because, for some airplanes, the indicated airspeed near the stall has significant error.
Convert your IAS stall speed into CAS, multiply by 1.3 and convert that number from CAS into IAS.
Better still, use the speeds recommended in the POH.