Horizontal Stabilizer Indicated Airspeed True Airspeed 
Pilot Institute
JULY 11, 2025
Why don’t they use Indicated Airspeed just like the pilots who fly slower aircraft? Key Takeaways Mach number is a dimensionless ratio of true airspeed to local speed of sound. Mach number is simply a ratio of your true airspeed to the local speed of sound. Here’s why. What Is Mach Number?
Flying Magazine
JUNE 30, 2025
There are gap seals between the elevator and horizontal stabilizer, and the rudder and vertical stabilizer. We found a flaps up, power-off stall speed of 47 mph indicated airspeed, and full-flap stall speed of 42 mph indicated. gph; at 65 percent power the TAS was 140 mph and fuel burn was 11.7
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Plane and Pilot
SEPTEMBER 20, 2024
Alongside a nearby highway, some recognizable bits of airplane, the vertical stabilizer and rudder, a horizontal stabilizer and elevator, fell separately to Earth. Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed. The pilot died instantly. Nevertheless, the NTSB is clear.
Plane and Pilot
SEPTEMBER 20, 2024
Alongside a nearby highway, some recognizable bits of airplane, the vertical stabilizer and rudder, a horizontal stabilizer and elevator, fell separately to Earth. Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed. The pilot died instantly. Nevertheless, the NTSB is clear.
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