LH420
Been watching this on FR24 after getting a 7700 squawk notification. B747-800. D-ABVW operating FRA-BOS got as far as Beauvais before starting to turn 180….Assume back to FRA. Abeam Amiens, it routed north and after some “dog legging” it then routed towards Calais where it took up a holding pattern. Has now started to route back towards FRA!. Flight has maintained fl340 most of time! Interesting watch, for me at least😀😀