If you are taking a shot at my 0.2, bare in mind different ops will have different numbers. Mine are private/business and like Saturdays flight to NBR and back it was say 1h50 down and about 1hr30 back plus a warm up and taxi/backtrack and a refuel and taxi at the end of the day. So 2 sectors only.
If you are doing lots of sectors in a day and smaller durations then 0.2 would be way over the top.
In my example above the flight time on the engine TACH time was 3.4 and logged as 3.8, or only 11% which is far below the 19% average.
You need to have a reliable and accurate method of doing this that you can prove.
J
