Glide2

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.