Wise words from Whopity
Thank you for that refreshing glimpse at the blindingly obvious !
It is clear that these strange SOP's are invented by someone, but why is what I am really interested in ? I can understand a Vat of say 69Kt getting adjusted to 70 Kt but some of the things I have seen are pure rubbish with the Vat being adjusted by all sorts of numbers for all sorts of reasons.
The fact that the POH numbers are quoted a MTOW would seem to indicate a safety factor for most flights but to keep adding speed is just going to use up runway during the landing ( may be the people think that they have paid for all the runway and are determined to use all of the runway!).
My own theory as to why this speed addition is happening is that it is invented by the type of young flying instructor who dreams of the day he will be flying a big jet and wants to turn flying into a black art to show how clever he is, get three or four of these guys in a crew room on a bad weather day and who knows what they will invent next.