Thomas Oswald Aerospace Software

Software and research for aerospace applications

Flight Duty Calculator (FAA, FAR part 117 calculator)

Let an app compute your flight time limitation. This is an app for pilots who fly under FAA regulations, a FAR part 117 calculator.

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 for your Android or Apple iPhone or iPad, 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 features

  • easy and intuitive to use
  • calculation according FAR part 117
  • augmented and un-augmented operations
  • rest facility class considered
  • considers if un-acclimated
  • number of sectors considered
  • flight time limitation
  • duty time limitation
  • the settings are stored between the sessions
  • no ads

f you are flying under EU-Ops, you can use the European edition "EASA FTL 2016" which implements the regulations according to EASA ORO.FTL.205 and ORO.FTL.235. "EASA FTL 2016" can be found in Google Play and in Apple's App Store.

If you are flying under an Austrian AOC, you can use the Austrian edition "Flight Duty Austria" which implements the extension according to AOCV in addition to the Eu-Ops regulations. "Flight Duty Austria" can be found in Google Play.

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.

Download on the App Store


Get it on Google play



We speak the following languages: