Cold-temperature altitude corrections

FSS says COLD is the default temperature-compensation configuration. OFF assumes standard-day temperature; HOT&COLD must be enabled separately. Review the configuration before entering the destination temperature. FSS temperature compensation ^[160].

For VNAV approaches, the FMS can adjust waypoint altitude constraints in the approach, its transitions and the missed approach. Review the changed constraints before activating the modification.

Check the chart

Review published temperature requirements.

Check the chart and installed build.

Review the approach, airport elevation, temperature and any published temperature restrictions or correction requirements.

Check the configuration

On NAV INDEX 2/2, select MAINTENANCE. Find SETUP and select FLT CONFIG. On FLIGHT CONFIG, check TEMP COMP CONFIG. FSS describes COLD for 0 to −50 °DISA and HOT&COLD for −50 to +70 °DISA. FSS calls the maintenance page 2/2; the E175 1.0.1 example shows 2/3. Use the SETUP prompt shown in your aircraft.

Enter destination temperature

On LANDING INIT, enter the destination temperature in LDG TEMP.

Open TEMP COMP

FSS says the prompt requires a valid landing temperature, an active approach, COLD or HOT&COLD selected, and a position within 30 NM of the destination. Select TEMP COMP at right line-select key 5.

Review the proposed altitudes

Compare each affected constraint with the chart and intended clearance. Treat the proposed modification as a route change.

Apply and activate

After checking the proposed values, select APPLY. Inspect the MOD flight plan, then select ACTIVATE. Verify the active constraints.

Monitor the approach

Continue to check altitude, mode and actual flight path. An activated temperature correction does not substitute for the current chart or clearance. ^[160]