Is true airspeed your actual speed?
There are are normally 4 speeds in aviation.
1. IAS Indicated Air Speed. This is the speed that your air speed indicator shows.
2. CAS Calibrated Air Speed. This is the speed that your air speed indicator should show if there was no errors induced by angle of attack and other factors.
3. TAS True Air Speed. This is the speed you would be moving across the ground if there is not any wind.
4. GS Ground Speed. The speed in which you are actually moving across the ground.
When read speeds such as stall speed, or max speed (VNE) they are listed they are almost always shown in IAS. Because as you gain alt TAS will increase for the same IAS.
But you will always stall at the same IAS.
Control forces and max speeds are IAS.
On your gauges the big needle is IAS, the small red one is TAS.
HiTech
