Forum:Mermaid archer and black ptera

ok, i have a question: if i equip a black ptera to a mermaid archer , is the effect of black ptera activated if you use mermaid archer's effect to destroy it instead of mermaid archer?

the problem is that its effect is negated since it becomes an Equip spell card, but technically it should activate when sent to the graveyard where it is am onster again.

I also wonder if its effect activates when equipped to Mermaid Archer and it is destroyed by e.g Mystical Space Typhoon as an equip card.

Last question: if sent to the Graveyard as an Equip Card, can you use the effect of Divine Wind of Mist Valley?