The back right has seats blocked out on this flight and others for one reason only:

- it gives crew somewhere to sit and eat their food during breaks. However that's it, they aren't allowed to use the IFE, recline etc. Eating only. Especially on these ULH flights there isn't much space to sit for them even on upended containers and it can be long times between their allocated rest breaks. So you will see these seats avtually marked with 'crew' headrests... although of course people will try and sit in them.