Originally Posted by
chevvron
People still don't seem to realise that not all aircraft will show on FR24 or similar because they don't carry the necessary avionics; military aircraft mostly but many civil ones too.
True, though that doesn't apply to the aforementioned WebTrak, which displays data sourced from NATS radars and captures just about everything flying in (or under) the London TMA.
Here's a Typhoon from a couple of months ago, which obviously wasn't tracking on FR24:
Groundspeed 655 kts.
