Alphasim PBY Catalina Panel Update. FSX panel bitmaps, cameras and weapon effects for the PBY Catalina from Alphasim, now Virtavia freeware. Requires direct download from Virtavia. com. The panel bitmap is improved by headover throttles and a typical Catalina yoke. There are 5 internal and 3 external aircraft view cameras plus 1 cockpit view. The smokesystem is configured with weapon effects. Configuration by Erwin Welker.