The European Union Aviation Safety Agency (EASA) has approved the Aspen Avionics Evolution E5 Electronic Flight Instrument (EFI), which is available for installation in a variety of general aviation aircraft. The E5 EFI contains the attitude indicator and directional gyro and course deviation indicator all in one display with its own backup battery.
The E5, like all Aspen Evolution indicators, fits into standard panel cutouts, replacing the original attitude indicator/directional gyro without requiring any panel modification. When installed in an aircraft with a panel-mounted GPS, the E5 EFI can be used for IFR flying. Price of the E5 starts at $4,995 and includes GPS steering and air data computer and attitude heading reference system.
Buyers of the non-TSO'd E5 EFI can convert it later to an Evolution Pro Max configuration and then add advanced features such as synthetic vision and angle-of-attack indicator. A key benefit of installing the Aspen display is that the vacuum system that drives the removed attitude indicator and directional gyro can also be eliminated, saving weight and improving reliability.