Flight Simulator X is known to trigger a fallback to Basic scheme on Windows 7. This does not limit the functionality of FSX, but many users nevertheless find it annoying. A fix for removing fallback behaviour is available below.
FSX Scheme Fix replaces FSX program file (fsx.exe) with a modified one, and creates a backup of the original file. This is a very lightweight fix with no other permanent changes or files installed to your computer.