Average ISA Deviation
Achieving a smooth descent
USD 4.99 · Designed for iPad
Instantly calculate average ISA deviation for accurate FMC descent planning on the B737. A fast, offline tool built by pilots for pilots.
Average ISA Deviation is a fast and precise utility designed for pro pilots who need to calculate the average ISA temperature deviation to correctly enter the DES FORECAST in the FMC of the Boeing 737 (NG / MAX) and other aircraft.
The app allows you to:
• Quickly calculate the average ISA deviation
• Reduce workload and potential errors during descent planning
• Simplify calculations that are normally done manually
• Work fully offline, ideal for cockpit use
Designed by a pilot, for pilots.
Legal Disclaimer
This application is intended as an advisory and informational tool only. It does not replace official aeronautical charts, flight planning systems, company procedures, or regulatory guidance.
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
• Improved overall user workflow
• Minor interface refinements and stability improvements
The developer, Juan Mauricio Padilla Villarreal, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Juan Mauricio Padilla Villarreal
- Size
- 538.6 KB
- Category
- Navigation
- Compatibility
Requires iOS 26.1 or later.
- iPhone
Requires iOS 26.1 or later. - iPad
Requires iPadOS 26.1 or later. - Mac
Requires macOS 26.1 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.1 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Juan Mauricio Padilla Villarreal 2013
