Let an app compute your flight and duty time limit. This is an app for pilots who fly under FAR 121.

Stop these endless discussions with crew-control and avoid these embarrassing violation reports in future, because you inadvertently busted your duty limit.

Flight Duty Calculator (FAA) is a small and easy to use app which helps you to determine the maximum allowable flight duty period, the maximum flight time and the minimum rest you need after that duty.

Key benefits:

-- easy and intuitive to use

-- calculation according FAR part 117

-- augmented and unaugmented operations

-- rest facility class considered

-- considers if unacclimated

-- number of flight segments considered

-- flight time limitation

-- duty time limitation

-- earliest check in time

If you are flying under EASA-Ops, you can use the European edition "EASA FTL 2016" which implements the European regulations.

Please be aware, that local regulations and company procedures can further restrict the regulations, so never forget, that you as pilot are ultimately responsible for acting according to the regulations.

For questions please contact me via

What’s New

Version 1.5

A layout issue solved.
A bug regarding UTC and local time fixed.

Ratings and Reviews

Mister zman ,

No go item.

Basic app. No frills. Does not take into account your acclimated time zone.

Developer Response ,

Of course it does take into account the acclimated time zone. Please look at the app before giving bad reviews.

Sheveze82 ,


This was a waste of my money! I want my money back!!

Developer Response ,

I am sorry that you do not like my app. But there is a money back guarantee included in the appstore, so you can get your money back, of course.


Thomas Oswald
14.9 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2014-2019 by Thomas Oswald Aerospace Software


  • Family Sharing

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

More By This Developer