All Aviation Manager DOS users should be aware that Microsoft has discontinued support for DOS. Operating systems such as Windows 2000 and Windows XP make it very difficult to operate DOS applications. 

New computers, printers and Operating Systems are not DOS-friendly at all. Hardware companies, such as printer manufacturers, are manufacturing printers and hardware that are not compatible with DOS software applications, or provide limited DOS capabilities.

TangoWare  will continue to provide limited Technical Support for AVMDOS issues. (We will not be completing any program code changes or feature improvements to the AVMDOS in the future.)