ALTITUDE
Pilot/Controller Glossary with JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov
The height of a level, point, or object measured in feet Above Ground Level (AGL) or from Mean Sea Level (MSL).
- MSL Altitude- Altitude expressed in feet measured from mean sea level.
- AGL Altitude- Altitude expressed in feet measured above ground level.
- Indicated Altitude- The altitude as shown by an altimeter. On a pressure or barometric altimeter it is altitude as shown uncorrected for instrument error and uncompensated for variation from standard atmospheric conditions.
See FLIGHT LEVEL; ALTITUDE ICAO.
ICAO definition
The vertical distance of a level, a point or an object considered as a point, measured from mean sea level (MSL).