How does Tach time compare to Hobbs time?
Based upon the flying habits of our club members and a comparison of the two meters in one of our Archers, 1 hour of Hobbs time is equivalent to about 0.83 hours on the tachometer. This ratio will depend on the speed at which the engine is run (%SHP). In general, the lower the RPM of the engine, the lower the Tach time will be relative to the Hobbs time. Using the 0.83 ratio, we note that the hourly rate for our Archer II is about 20% less expensive to fly than an Archer II at a nearby FBO. Furthermore, the condition of our aircraft is far superior to many available for rent and there are no minimum charges for days/weekends when the plane is parked at your destination and not flown!
