I didn't have time to do a deep dive but,
https://tc.canada.ca/en/aviation/ref...-ac-no-302-019
Section 2.3 - 1 (a)
Aircraft Approach Speed Category. A grouping of aircraft based on a reference landing speed (VREF
), if specified, or if VREF
is not specified, 1.3 times stall speed (VSO
) at the maximum certificated landing weight. VREF
, VSO
, and the maximum certificated landing weight are those values as established for the aircraft by the certification authority of the country of registry.
I think that's the part you are looking for... or at least I hope that is what you are looking for.