Originally Posted by
Gonzo
Pretty sure that's a Webtrack error, SWR35B (LX352 GVA-LHR) was already on the ground by this time. No record of a SWR5717 or any other Swiss flights from GVA-LHR on that day around that time on the usual sites. It's not a LHR callsign/flight number that I recognise, nor does it appear on FR24 or other ADS-B tracker sites that I can see.
Quite so. It would also be rather unusual to see a GVA-LHR flight on an Ockham STAR for 27s, as in this case.
Still showing on WebTrak as I write - drilling down shows the mystery flight as being operated by HB-JBB, the same aircraft that landed as LX352 20 minutes previously.
Very strange, I'll see if Heathrow can shed any light on it.