Pilot Institute

MARCH 6, 2025

AGL Above Ground Level AGL is simply a way to tell the basis from which any given height or altitude is measured. Simply put, 400 feet AGL means that the 400 feet is measured from the underlying ground surface above the specific airspace. This is as opposed to other altitude measurements, such as AMSL or above mean sea level.

Pilot 52

Pilot Weather Air Traffic Control NOTAMs 52

Flight Training Central

FEBRUARY 17, 2024

Additionally, a pilot should report any of the following events:: When vacating any previously assigned altitude or flight level for a newly assigned altitude or flight level ( AIM 5-3-3 ) When an altitude change will be made if operating on a clearance specifying VFR-on-top. ( AIM 5-3-3 ) When an approach has been missed. (

Instrument Flight Rules 52

Instrument Flight Rules AGL Ceiling True Airspeed 52

Pilot Institute

APRIL 24, 2024

They try to make the underlying airspace easily navigable by visual flight rules (VFR) aircraft. This effectively limits traffic in Class B to 250 knots due to 14 CFR § 91.117(a). Traffic flying under a shelf or through a VFR corridor needs to stay below 200 knots. Expect considerable traffic near Class B airspace.

Clearance 52

Clearance Ceiling Airspace Classes Transponder 52