Originally Posted by
Check Airman
At the end of the day, in my opinion, it comes down to technique and personal preference. This is an academic discussion really. With the buffers built into line operations, 2-3 kts won't cause a stall or runway overrun.
Vref -3 works out to be approx. 1.23 Vso in the pictures provided by Pineteam. 1.23 Vso is within normal operating range.