Aileron Horizontal Stabilizer True Airspeed 
Pilot Institute
JULY 11, 2025
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. Air density drops with altitude, so for a given true speed, dynamic pressure (and thus IAS) will be lower at high altitudes. Here’s why.
Flying Magazine
JUNE 30, 2025
Ailerons are actuated by pushrods that run through the wing struts, reducing aerodynamic drag and giving the responsive ailerons a solid feel. There are gap seals between the elevator and horizontal stabilizer, and the rudder and vertical stabilizer. Stalls were true nonevents. Handling is delightful.
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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. I did my first aileron roll in an RV-4. Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed.
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. I did my first aileron roll in an RV-4. Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed.
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