Morning Ingo,
3C4D6E decodes to D-ACKN unknown
3D1F8C D-EKEU - I had c/n 3464110 written off as damaged beyond repair on landing in Prague in 2006 while it was OE-KEU, guess it has been repaired after all
484375 I have also as PH-3S7 Zenair CH 701 STOL c/n 7-9161
D-EKKS c/n 17272162
3D24BB D-EMDV, Boeing PT-13D Stearman, c/n 75-5844
3D33B4 D-ERVG, Van's RV-8, c/n 82198
3DF01C decodes to D-HLEI unknown to me
502C84 unknown
780782 B-6793, Airbus A320-232, c/n 4829, Air China
Regards and thanks again
Alan