RVSM alt check on ground
When and how do you perform the RVSM alt check on ground (75ft max tollerance) between PFD alt and ground elevation?
Usually plates doesn't show apron elevation, so remaing options may be the ARP (not feasable to take the plane on it to perform the check) or at runway threshold.
Are you allowed not to enter RVSM if an alt threshold check would be outside limits? Or your company will ask you money for extra burnt fuel, since your SOP don't forsee to perform this check at threshold?
Any prectical suggestion is well accepted!