In MSFS Planner for most aircraft there is a sign with a note saying “Aircraft performance data not available”. What does it mean? Why don’t they know the performance data of their own aircraft?
That’s a good point. For first party planes that is something they can add themselves. Actually I tried throwing in some numbers for the plane I’m in right now. The red text remains, but that could still be valid. It’s saying there isn’t a profile for it, so configure manually, so that may still be accurate.
Moved to User Support Hub > ATC, Traffic & NAVAIDs as OP is requesting Community assistance.
It seems to me that the OP is asking for an ANSWER. The community doesn’t know. How about putting this back into a forum that will get that answer please.
Yes, an answer would be nice. I guess this can only be answered by someone at Working Title. But better than that would be if they added the missing aircraft data to the flight planner. 
another rushed feature. Without performance data it is unless…
Any idea what’s the performance data of th Inibuilds A321?
It’s a bit annoying to see this red bar saying I can’t reach the altitude I will fly at.
There was a reply from a Working Title developer here: MSFS 2024 Flight Planning and website - #145 by GimbalAxis (FYI)
Does someone have some performance profile for 737 Max ? It’s still not available on planner. I know working title can’t do anything because the data should be filled by dev in their plane but really the planner is still so useless except for making routes.
That’s a shame because this planner has so much more potential than simbrief for me, and I prefer It’s UI
Does it make sense that performance data hasn’t even been provided for the basic planes yet?