Flight Training Central

FEBRUARY 17, 2024

Each is defined by varying ceilings and visibility. They stand for Visual Flight Rules, Marginal Flight Rules, Instrument Flight Rules, and Low Instrument Flight Rules. IFR = Ceilings between 500’ and 999’ AGL and/or visibility between 1 and 3 miles.

Instrument Flight Rules 52

Instrument Flight Rules AGL Ceiling True Airspeed 52

Flight Training Central

MARCH 18, 2024

There are different requirements if the flight is operated under Instrument Flight Rules (IFR) or Visual Flight Rules (VFR). For example, a pilot flying IFR in controlled airspace will have to file an IFR flight plan and receive an ATC clearance. It typically extends to 4,000′ AGL.

AGL 52

AGL Indicated Airspeed Clearance Transponder 52

Pilot Institute

APRIL 24, 2024

They try to make the underlying airspace easily navigable by visual flight rules (VFR) aircraft. This central core extends up to around 10,000 feet MSL, the airspace’s ceiling. However, the ceiling for each shelf is the same as the core. They often happen when aircraft descend early on a visual approach.

Clearance 52

Clearance Ceiling Airspace Classes Transponder 52