What is the Transfer Altitude?

The Transfer Altitude refers to the highest altitude at which pilots are provided with vertical positioning in feet rather than as flight levels. This is important for navigation and communication with air traffic control. Above this altitude, aircraft are usually referred to in terms of flight levels (FL), which are based on standard atmospheric pressure settings.

In aviation operations, once an aircraft transitions above the Transfer Altitude, altimeters are adjusted for a standard setting (usually 29.92 inches of mercury) and the aircraft altitude is expressed in flight levels. Conversely, below this altitude, altitudes are typically indicated in feet based on local pressure settings. Understanding the Transfer Altitude is crucial for pilots in that it aids in maintaining proper separation and communication with air traffic control while transitioning between various types of airspace.