Twin Otter and instructor certificate

[Le Coyote]

According to Canadian regulations, what do you need to give traning on a twin otter ?

Instructor certificate ? Does it appear on your commercial pilot certificate ?

Does the twin otter require a specific "type" rating in canada ?

If so, does it require an approved training ?

Thanks. (I would have ask "transports canada" but I need answers before monday...)

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Le Coyote