Search the Community
Showing results for tags 'in-flight hours'.
Which is the better system for recording an aircraft's Total Time in Service (or pilot's flying time for that matter)? There are at least two ways of recording an aircraft's TTIS - Tacho time or Hobbs Meter time. Although aiming for the same target, the two methods record different things. Tacho time is a recording of the time an engine has been operating. It is linked to engine revolutions per minute (RPM). Tacho Time records the time at some specific RPM. It is most accurate at cruise RPM, and least accurate while taxiing or stationary with the engine running. At these times, the clock