5687 kHz: GAF452 & DHM91

At 0604z, GAF452 reported ATD from Koeln-Bonn (EDDK) of 0515z and ETA at a not given destination of 0720z to DHM91 on 5.687 MHz. Additionally, a SELCAL check of GJHL was performed which IDs this bird as a Canadair 601 Challenger, registration 12+06.