RAFCAD means RadiusAFCAD. This is a special development from Kevin Au and Matt Fox. You can obtain more detailed documentation about RAFCAD in english language at ProjectAI - RAFCAD Important Information . AI aircraft can be assigned to specific gate positions by matching the aircraft radius as defined in the aircraft *.MDL file and the gate radius assigned in AFCAD freeware program. With RAFCAD and modified aircraft *.MDL files AI traffic will nearly always taxi to the correct gates depending on airline affiliation and airline assigned terminals. Aircraft *.MDL files can be edited with the freeware program AITM - AI Traffic Mover . RAFCAD import files also work without MDL file changes according to RAFCAD Matrix v1.04 but AI traffic will not use correct gates and parking positions in that case. You must add some Parking Specs to the AFCAD.INI file of your AFCAD program.