Thomas Oswald Aerospace Software

Software and research for aerospace applications

EASA FTL

Let an app compute your flight time limitation. 

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

EASA FTL is a small and easy to use app for your Apple or Android device which helps you to determine the maximum allowable flight duty period and the minimum rest time according to EASA ORO.FTL.205 and ORO.FTL.235.

Key features

  • easy and intuitive to use.
  • calculation according EASA ORO.FTL.205 and ORO.FTL.235. which is in effect since February 2016.
  • the possibility of a flighttime extension is taken into account.
  • the effect of Window of Circardian Low (WOCL) is taken into account.
  • the effect of the state of acclimatisation is taken into account.
  • effect of the place of first departure (homebase or not) is taken into account.
  • zoom-function.
  • no ads.


Split duty times are to be implemented by local authorities, as well as extensions due to pilots decision, so they are not considered in this app. However, I would be happy to develop  special versions for companies or persons, so please contact me if you need special features implemented.

The app is optimized for tablets. On devices with small screens you can zoom the screen for better readability.

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.

If you are flying under FAR part 121, you can use the FAA edition "Flight Duty Calculator (FAA)" which implements FAR part 117. "Flight Duty Calculator (FAA)" can be found in Google Play.

Pilots flying for a Malta AOC can use our app "Flight Duty Calculator (Malta)"

"Flight Duty Calculator (Malta)" 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.


Here you can download the app:


Download on the Appstore



Get it on Google Play !


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