Jaba, I can afford to do the mod- so no problems for me personally.
There are lots of operators who cannot remain viable while doing the upgrade.
If Canada with its very large amount of polar traffic heading to the USA in non radar covered airspace can come up with a fair mandate why can't ASA?
And why doesn't anyone answer Creampuffs very reasonable query about how military aircraft and Airlines with faulty equipment can be handled but not an occasional bisjet.?