How could Harry and his friends survive the fall without the charm?

Question

We have seen several instances where Harry or in specila cases his frineds survive several falls by using the "Arrestro Momentum" spell like in Prisoner of Azkaban and Deathly Hallows 2. But in Order of Phoenix, I observed they survived the fall without using the charm. Here is a screenshot of that moment:

So is it a unintended mistake from the producers? Or is it due to an omnipotent charm in hall of ministries?

Answer 1

While I have not seen this movie in a while, I will try my best to explain as this scene is fuzzy in my memory.

If I recall correctly, this is right before they encounter the rest of the Order in the Department of Mysteries.

One of a few things could have happened here:

• Due to the effects of the strange objects in this Department, it is possible that they stopped the fall of the group, allowing them to land safely.
• In the book, speechless spells are a thing, and are not mentioned as well in the movie, but still happen. It is also possible one of the group (possibly Hermione) used a speechless incantation of Arresto Momentum to stop the groups fall.
• The third reason is that since the Order members are awaiting Harry's group, they could've noticed the fall from a distance (assuming they didn't just Apparate into the Department) and used the spell off screen.
• It is a simple plot hole not thought out by the directors.