The synchronised landing gear mechanism in LEGO® ICONS™ 10318 Concorde takes things to a new level of awesomeness. Of course it's missing landing gear doors, but their absence is entirely forgivable considering how complex the mechanism is already.
I'd recommend taking extra care with any step that involves technic as I imagine it's tricky to rectify any mechanical errors later in the build process. Assuming all goes well though, you're in for a real treat when you turn that tail.
![](https://i.ytimg.com/vi/5uHy_tjt86A/maxresdefault.jpg)