threemiles,
FR24 is not the only source of data available at this time, it's the only source of PUBLIC available data.
I'm not 'bashing' just trying to highlight to the less informed that a search & rescue operation will not solely be based on an App you can download on your phone that is run from an unregulated company with the help of enthusiasts and hobbyists.
It is a great little graphical tool and I know some of my colleagues wives use it to know when to put the dinner on, anything more than that is just speculation