App Detail » Cold Temperature Corrections

Published by: David Brickell

iPhone App - Designed for iPhone, compatible with iPad

Price: $1.99
Current Version: 3.0
Released: September 15, 2015

What's New

Numerous performance upgrades.

iOS 14.4 compatibility upgrades.

App Description

Calculates cold temperature corrections to account for altimeter errors induced by operations in colder than standard temperatures.

Quickly and easily apply temperature corrections:
1. Enter airport elevation (or TDZE);
2. Select between Feet or Metres;
3. Select the temperature using the temperature slider;
4. Enter the altitudes for the desired fixes (fix names may be renamed as desired);
5. The temperature compensated altitude is calculated and displayed adjacent to the minimum altitude entered.

Enhanced slider for selecting temperature. In addition to sliding the pointer to increase or decrease temperature, tap right or left of the pointer or on the snow flakes to adjust the temperature in 1 degree increments or touch and hold right or left of the pointer or on the snow flakes to automatically slide the pointer.

Clean and intuitive user interface.

The application uses an equation to calculate cold temperature corrections that is more accurate than the cold temperature corrections published in the ICAO table and various AIMs. The ICAO table is only accurate for corrections above a sea level airport. While the ICAO table provides a conservative correction for airport elevations above sea level, the ICAO table corrections are not as accurate as the application corrections.

The equation the application uses produces results that are within 5% of the accurate correction for airport elevations up to 3000 ft and with heights up to 5000 ft above airport elevation.

***Temperature compensated altitudes calculated by this application are for use as reference only. It remains the Pilot in Command's responsibility to ensure the aircraft is operated at safe and appropriate altitudes.***