Airline 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.
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. After the military, he joined Hughes Airwest as an airline pilot and settled down with his wife and baby in Boulder City. The pilot died instantly.
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. After the military, he joined Hughes Airwest as an airline pilot and settled down with his wife and baby in Boulder City. The pilot died instantly.
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