Pilot Institute

FEBRUARY 1, 2025

This section is also needed when youre calculating your true airspeed, which you need to know to plan your flight. Calculating True Airspeed Follow steps 1-3 from the section above. Find your Calibrated Airspeed on the middle scale on the movable disk. Thats your true airspeed. Look under the grommet.

Groundspeed 52

Groundspeed True Airspeed Density Altitude Knot 52

Plane and Pilot

SEPTEMBER 20, 2024

Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed. The margin beyond VNE in indicated airspeed and the onset of flutter may be less than many pilots would guess. Nevertheless, the NTSB is clear. A mellow barrel roll was fine. A too-fast entry into a power-on split S was not.

True Airspeed 93

True Airspeed Indicated Airspeed Horizontal Stabilizer Aileron 93

Plane and Pilot

SEPTEMBER 20, 2024

Flutter is a dangerous, complex, dynamic aeroelastic phenomenon dependent on true airspeed. The margin beyond VNE in indicated airspeed and the onset of flutter may be less than many pilots would guess. Nevertheless, the NTSB is clear. A mellow barrel roll was fine. A too-fast entry into a power-on split S was not.

True Airspeed 93

True Airspeed Indicated Airspeed Horizontal Stabilizer Aileron 93