As an example, the Vref CAT C for a 737 is based on 40T LW with flaps 30...
How did you/they come up with such a number?,my 737 DOW(no cargo,no pax,no fuel) is around 45T
On a side note,my airline aircraft that are Categorized as Cat C have always a VREF below 141kts with Flaps 40 NOT 30 and a go around flaps 15 below 160kts...food for thought
