GAF 218 is a airbus 310 from the german airforce and mostly landing at Norvenich or Koln Bonn ( Germany )
No, it wasn't an A310. Visual sighting from Scotavnet:
1623 "GAF 218" 12+07 CL.601 1xapp r/w 23
Tarbat,
Many thanks for being able to track this guy down. I even checked the Libhomeradar site. They have listed 4 contacts using flight ID of GAF218/GAF0218 but as with the GAS and Airframes sites no route details, no registration, no aircraft type, nothing. As I said, at first, when I spotted it flying over Glasgow he was at FL40 and using the bins it certainly looked like a bizjet therefore suspected it was one of their CL601s. Just strange that none of the usual database sites had any info when the modeS code was entered. Still, mystery solved.
Thanks again,
Ian