What is msl and agl when referring to airspace?

Question

What is msl and agl when referring to airspace?

Answer 1

MSL: Mean Sea Level

AGL: Above Ground Level

Answer 2

MSL ≡ Mean Sea Level

AGL ≡ Above Ground Level

AMSL ≡ Above Mean Sea Level

ASL ≡ Above Sea Level

AAE ≡ Above Airport Elevation

The standard datum plane is not fixed.  It fluctuates above and below Mean Sea Level.

On sectional charts obstructions are labeled in feet above MSL, and parenthetically in feet AGL.

Altitudes on some Jeppesen charts specify ASL.

Answer 3

MSL is Mean Sea Level, or height above a the standard Datum plane.

AGL is Above Ground Level, or actual height above the ground.

The MSL of an airport could be 716' MSL (kyip case your wondering) so if a there is a tower on the field  that is 200' tall, its is 916' MSL, or 200AGL.

Answer 4

above posts are correct.

Answer 5

MSL = Altitude Above Sea Level (MEAN SEA LEVEL)

AGL= Altitude Above Ground (ABOVE GROUND LEVEL)



Airspace altitudes on aviation charts are always in MSL