Comment: Umm, no.

(See in situ)

Umm, no.

Hit the propeller? It takes either pretty clear intent to aim at the plane, or just recklessness. Had he waited until the plane was close enough to hear the shot itself, while the bullet was aimed away from the plane, that would be one thing. I don't think your grandfather was handling the situation properly. It's a sad situation, but I don't think his actions are defensible.