| A | B |
|---|
| Indicated Airspeed (IAS) | The airspeed displayed on the aircraft's airspeed indicator. |
| Calibrated Airspeed (CAS) | Indicated airspeed corrected for installation error. |
| True Airspeed (TAS) | Calibrated airspeed corrected for non-standard atmospheric conditions. |
| Pressure Altitude | The height above the standard pressure level of 29.92"Hg |
| Density Altitude | Pressure altitude corrected for temperature and humidity. |
| AGL | The actual height above the surface of the earth. |
| Groundspeed (GS) | True airspeed plus or minus wind speed. |
| Indicated Altitude | The altitude Indicated by an altimeter set to the current altimeter setting. |
| MSL | The actual height above mean sea level |
