Aspen Avionics presented the latest developments in its partnership with Electronics International for engine monitoring capabilities this week at AEA 2025. This integration, first announced in July 2024, brings comprehensive engine instrumentation to Aspen’s Evolution multifunction displays (MFDs). 

At the show, an Aspen Avionics spokesperson discussed the added functionality, which is expected to be available by mid-2025. The solution maintains the Evolution system’s flexibility while adding critical engine management capabilities.

A split-screen approach is used, with engine instrumentation occupying the top half of the MFD in a fixed configuration. “The MFD will display the engine information on the top half of the MFD, and that would be kind of locked in place,” the spokesperson said. The bottom portion of the display retains its pilot-selectable nature, allowing users to toggle between supplementary engine information, terrain, charts, and more.

Enhanced data is provided by the supplementary engine information section, including fuel computations and exhaust gas temperature and cylinder head temperature displays. Hotkeys are included in the lower right portion of the screen to toggle between normalized and absolute views of engine parameters.

Another feature is the addition of a fuel timer to the existing timer page. Aspen Avionics’ spokesperson also noted that “if the MFD is operating in reversion mode, we’re going to retain the engine instrument functionality.”