CHT & EGT

NOTICE

If gasket-style CHT probes are installed, CHT can read 50-100 degrees F higher than the bayonet-style probes used by most aircraft and engine manufacturers.

Cylinder Head Temperature (CHT) and Exhaust Gas Temperature (EGT) are displayed on a graph within the 'Temperature' Section of the Main Tab in the EIS Application. The CHT/EGT may also be configured to display on the EIS strip. Each cylinder will numerically display its respective CHT above the indicated bar, and respective EGT below the indicated bar. The selected or hottest CHT/EGT is displayed above the graph. The hottest CHT/EGT and TIT (Turbine Inlet Temperature) (if installed) values are in reverse video for easy reference. The CHT/EGT graphs will show the temperature bars of the graph at the bottom, even when temperatures are below the minimum indicating range.

If a Primary EGT is installed or a TIT is installed, a bar gauge on the right side of the CHT/EGT graph will be displayed with the respective value displayed above. If a single EGT/CHT is configured, these features are unavailable.

190-03123-21 Rev A
July 2026