Cessna 177 Brett Harrison Models/c177.ac 1.99 propall prop propdisc boss select propdisc velocities/true-airspeed-kt 50 select prop velocities/true-airspeed-kt 60 spin propall velocities/true-airspeed-kt 90 -2.7391 0.000 0.9576 -1.000 0.000 0.000