Hi Ingo,
3C09D8 decodes to D-ASSX unknown
440463 OE-9262, Brditschka HB-23/2400 Hobbyliner, c/n 23009, HB23
440BB3 unknown to me
451F0D unknown to me
461F95 decodes to OH-LYZ, now A6-ESA, McDonnell Douglas DC-9-51, c/n 48136/993, Eastern Sky Jets
Thanks
Alan