Glide2
Engine Failure Return
Free · Designed for iPad. Not verified for macOS.
Calculate before takeoff whether you can make it back to the runway if your engine fails.
Impossible Turn Calculator
Know before you go. The "impossible turn" — returning to the runway after engine failure on departure — is one of aviation's most critical and least-practiced decisions. This app helps you calculate whether you can make it back.
Enter your numbers, get your answer.
Select your aircraft or add a custom one with your own glide ratio, best glide speed, and MTOW
Set your departure altitude, bank angle, reaction time, wind, and density altitude conditions
See whether the turn is survivable before you ever leave the ground
Features:
Built-in aircraft profiles with real-world performance data
Custom aircraft support — add any type with your own specs
Density altitude calculations with OAT and altimeter setting
Bank angle and weight effects on stall speed
Wind correction
Clean, dark instrument-panel interface
For pilots who plan ahead.
For informational and educational purposes only. Not a substitute for flight instruction or certified training. Always follow your AFM and FAA guidance.
Ratings & Reviews
The developer, DONALD STEVEN SIEGEL, 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
- DONALD STEVEN SIEGEL
- Size
- 896 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Donald Siegel