Holdover Times Calculator
Andrius Orlovas
About this app
- Category Navigation
- Age 10
- Updated Nov 5, 2025
- OS IOS
Editor reviews
Holdover Times Calculator is a pilot focused weather and navigation utility that quickly computes deicing and anti icing holdover time windows. It blends live aviation weather, fluid selection, and regulatory tables to support fast, confident decisions on the ramp and during taxi. Ideal for airline and general aviation crews, dispatchers, and deicing coordinators seeking a precise, easy to use HOT calculator.
Core features
- Accurate HOT calculations based on fluid type and concentration, temperature, precipitation type and intensity, and wind effects
- One tap airport lookup with auto METAR and TAF fetch plus manual entry and offline reference tables
- Smart timers and alerts to track HOT start and expiry, with customizable notifications for changing conditions
Advantages
- Built on FAA and Transport Canada guidance for familiarity and consistency
- Clean, pilot friendly interface optimized for quick use in operational environments and EFB workflows
- Lightweight, fast, and reliable for flight planning and day of operations
Keywords include aviation deicing calculator, holdover time, METAR weather, EFB tool, flight operations, ramp safety, winter operations
Screenshots
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How to use:
1. Download and open the app, then allow location access to auto detect the nearest airport or search by ICAO or airport name.
2. Choose a deicing or anti icing fluid type and concentration, then select the reference standard such as FAA or Transport Canada.
3. Import current weather automatically from METAR or enter it manually, including temperature, precipitation type and intensity, and wind.
4. Review the calculated holdover time window, start the timer, and enable alerts to be notified before the window expires.
5. Use advanced options to save favorite airports, switch units, view offline tables for contingency use, and export results to your EFB or crew workflow.