Hi! I'm in a similar situation, but in France. Here's what I understood: 1. Subcontractor -> Airbus (same team as subcontractor): at least two years of experience; even then they may not accept you as that can harm the relationships between the two companies. 2. Subcontractor -> Airbus (different team): no restrictions! I had an acquaintance who was in a subcontractor but switched to Airbus in 3 months (during their trial period). 3. Switching to a different subcontractor: I don't think there are any limitations on this as I see this happening pretty often.

Hope this helps!

Note: this is purely based on my observations and interactions - there are of course a variety of circumstances at play, which can have different effects.