Mystery AN12BP
On Friday 7 June at about 2100 BST I heard a heavy turboprop crossing central London at a fair altitude. As this is unusual I checked FR24 which showed it as a AN12BP about 5 hours out of Heraklion, unreported destination, heading approx NW at about 20,000. Unfortunately I did not note the reg and I have no history as I only have the basic free FR24.
Intrigued I kept an eye on it on my mobile. It continued to an area In the Midlands SW of the M42 / M40 aŕriving approx 2130+. It then circled for some time, and descended to 10,000. After further circling it descended to 3,000, and was circling for at least 10 minutes when at about 2205 BST it went 'off screen' - presumably transponder switched off.
Does anybody know what it was up to?