The FAR 117 Flight Time Duty Time app helps pilots calculate their duty times, max flight times, rest requirements, and more.

*New Feature: Cumulative times!

Be sure to use this app before ground school to get up to speed on the new regs. Click on the "info" buttons to view details that help you learn about the new 117 regulations or use the built in Quick Reference Guide.

Part 121 pilots should use this app before calling crew scheduling.

• Free and no ads!
• The easiest 117 calculator on the market
• FAR 117 compliant calculations
• For use with both augmented and unaugmented operations
• Takes into account rest class
• Time zone calculations
• 14 CFR 117 document with search function
• FAR 117 Tables with active highlighting based on user inputs
• Outputs: Max Flight Time, Max Duty Period, Latest Off Duty Time, Do not takeoff after time, Extensions, and more
• Email results to your chief pilot or yourself for a record
• Free and no ads!

This app does not include union/company specific contract limitations. Contact us if your union/company would like to have an app built to fit your contract!

If you find bugs or want features please contact:

What's New


• Whole new look
• Cumulative calculations
• Multiple time zones
• 117 Quick Ref Guide

Ratings and Reviews

3.2 out of 5

17 Ratings

17 Ratings

Helpful, but needs one tweak


This is very helpful, but needs one thing. When you switch away from the app to say go view your schedule and I'm look back at the app again all the fields reset. This is especially true after you've run the calculation.

This is extremely annoying, please make this persistent so it doesn't reset and I have to reenter everything to get a calculation.

Looks good so far


Appears to do what it needs on the surface. Will need to test it out.
I'd like to have the ability to swipe scroll up and down where it continues to scroll after finger removed from screen. Most other apps scroll that way. A quick flick should allow scrolling where it starts as fast as the flick and slows down.

Good but one annoying thing


This is a well done and useful app. There is only i.e. thing that is rather annoying. If you minimize or switch apps; say to view your schedule, and then reopen the app - the data entered resets, requiring input again. This is rather annoying.


Joshua Whiting
3.5 MB
Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, German, Northern Sami, Spanish
Age Rating
Rated 4+
© 2013


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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