Aún no tenemos significados para "happen luckily".
1He happened luckily to have a few cartridges in his pocket.
2He happened luckily to be at home, and at once hastened to my assistance.
3In this unfortunate predicament, it happened luckily for the survivors that Nicuessa appeared with his ships.
4I asked, taking hold of my gun as I spoke, which happened luckily to have one barrel loaded with ball.
5"Yes, it has happened luckily for you," he said, raising the open snuffbox to his nose.