Afternoon Alan,
Not sure about this, but just left Alicante with full ADSB and Mode S code of 3FF63D. Registration and flight id of D-MSZR. Height shown as 800ft. The accompanying photo shows a Platzer Kiebitz B2 with c/n 291 !
FR24 is giving the same details. Should the info be correct it is a most unusual visitor and with the wind that is currently blowing it is lucky to get off the ground.
Incidentally, there is no silhouette (not surprising) and no aircraft type showing in AN although FR24 has the aircraft type as ULAC.
It is currently still on.
EWG5862 : LOWW-LEAL
EWG5863 : LEAL-LOWW
Ian