HOLDOVER CALCULATOR GUIDE

Operational instructions and best practices for professional pilots mastering precision in winter operations.

Initial Setup & Configuration

Select your default preferences and environmental constants. These settings form the factual basis for all subsequent holdover calculations.

Select customs setting on the initial setup page.

Critical Aircraft Surfaces:

Select appropriate box based on if your aircraft surface is primarily aluminum or composite

Data Source:

Select applicable holdover guidelines data issuing authority. Determines whether the application will use FAA or TC data.

Final Anti-ice Application:

Selecting YES - Final application prior to extending slats or flaps. Adjusts for fluid run-off based on timing.

Nearby Weather Stations:

Select YES to allow automatic METAR/ASOS fetching based on location.

Default Holdover Time:

Choose between Official Recommendations with default allowance or App Estimates.

Rotation Speed Category:

Select aircraft actual rotation speed. Drives LOUT limitations for Type II/IV fluids.

Timer Tones:

Pick the sounds the timer plays at zero

Time Display:

Choose to display times in Zulu or Local

Local Clock Format:

Choose 24hr or 12hr clock format

Cockpit Timer Sharing:

Allows up to 3 shared Cockpit devices to track a running holdover timer simultaneously.

Device Management:

Forget Paired Devices clears all previous links. Essential for security between crew swaps.

INTUITIVE COCKPIT INTERFACE

Optimized for high-stress environments with large touch targets and rapid data entry fields. Step through calculating holdover times with visual confirmation at every stage.