One of the most debated topics in Volume 3 is the "maximum bank angle" (25° or 30°) used for design. If a designer uses too aggressive a turn, pilots may not comply. Volume 3 provides formulas to ensure the turn initiation point is mathematically flyable for all categories of aircraft (from a Cessna 172 to a Boeing 747).
: Highly recommended for pilots and flight operations teams as a guide for safe and standardized air navigation. Content and Key Sections icao doc 8168 volume 3
Criteria and requirements for establishing the altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes. International Civil Aviation Organization Implementation and Status One of the most debated topics in Volume