Whilst we accept that tracking sites like 360radar and FR24 are not perfect they can offer a good insight of profiles sufficient to generate discussion. There is often a lot of gap-filling and extrapolation of speeds and altitudes.
It is a shame that XX189 appears on the plot at around 14,000ft so with minimal history we don't know if it got there after a climb, a decent or was happily S&L.
Here is a screen shot of the profiles to aid that discussion.
As an ex-atco it raises a few questions for me but I can wait for the inquiry report to come out.
