You could try selling it as editorial, without a release form. I would consider an airshow to be good editorial content.
But even then, you'll need approval from the organizer?
I always thought that everything that's subject to entry fees/entry tickets is not suitable for editorial content without approval of the organizer.
Think music festivals, museums, airlines, and also airshows.
Yet I see a lot of editorial content from activities that require entry fees or tickets to get in.
So either I'm wrong, or the contributors take the risk (and are getting away with it)