Not sure where this has been documented. Look above, posted while I wrote a tome.
I pull to half cock and snug a mainspring clamp on the mainspring. I release the sear to allow the cock to fall forward and remove the mainspring. If the spring is going to be out of the lock more than a couple hours I release the mainspring from the vise.
Next I loosen the sear spring screw halfway and pop the spring from its slot. Remove screw and sear spring.
Next I remove all bridle screws and sear screw and set aside bridle, sear, and screws. I pluck the fly out and tape it to a card and set it aside.
I loosen the cock screw and holding the plate over open vise jaws I smack it with a screwdriver handle once. If it starts to loosen the cock from the tumbler, I back the cock screw out more and repeat until the cock is free of the tumbler. If it’s not easily loosening, I use a square brass punch on the tumbler shaft.
Ok now we have the frizzen and spring to remove. Options are to use a mainspring vise to clench the frizzen spring a tiny bit, or pry down with a piece of brass on the frizzen spring tip using the pan as a fulcrum. Then remove frizzen spring screw and spring, then frizzen.