CTA Helper

CTA Helper

Cold-temperature airport calcs

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Free

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Details

  • Released
  • Updated
  • August 6, 2026
  • September 19, 2026

Features

CTA Helper screenshot #1 for iPhone
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About

CTA Helper helps pilots comply with ENR 1.8 Cold Temperature Airport altitude adjustments. Simply select your airport and your approach, choose the weather, and the corrected altitudes for each fix will be shown for easy reference. * The complete database of all 2,100+ airports with cold-temperature corrected approaches * Manually select airport temperature or automatically load it from downloaded METAR data * Use All Segments or Individual Segments calculation methods (both acceptable to ENR 1.8) * Enter DH or MDA and see temperature-corrected altitude (where applicable) * Choose rounding strategy: always round up or nearest 100 (both acceptable to ENR 1.8)
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What's New in CTA Helper

1.1

September 19, 2026

Approach plates. Open an approach's FAA plate and read every named fix beside it at the altitude cold air makes it. Plates you have opened stay cached for the cycle, so they are there without a signal. Uncorrected altitudes now say why — a segment the Individual Segments Method excludes, a procedure that codes no reference altitude, an altitude ENR 1.8 never corrects — on screen and under VoiceOver. Airport lists mark cold weather: a filled badge where the restriction is in force in what is being reported now, outlined where a station reports above it. Siri and Spotlight open an airport or an approach by name. Nearest fills as soon as you allow location, and tracks at flight speeds. The display stays awake while the fix list is showing. Expired nav data is caught on launch and the current cycle offered.

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