Just a curiosity...

I fly a Slingsby T59-D Kestrel 19 in Canada. According to my Type
Certificate (G-93), a "back type parachute" is listed as required
equipment, along with basic instruments. So, a parachute must be worn
in order to fly the aircraft or I'm in violation of the TC. (The U.S.
TC for my ship is G27EU and does not require a parachute)

So, how many other aircraft out there have a legal requirement for the
pilot to wear a parachute?

Why would a CAA require some aircraft to have a parachute and others
not? Any rules as to which aircraft?

Odd things to be thinking about, but I haven't started flying yet this
season, and I'm getting antsy!