Rust minimum players for airdrop (UK2 Official)

What is the minimum players that need to be online for an airdrop on an official server? (UK2)

I believe all the official serves are set to 50 min pop. The official server I am on was finally received the MAr 18th patch yesterday and the number seems right.

Thanks! I got my first airdrop today!!! I don’t know why but no hackers came

Is it because your the hacker?