Icao Doc 8168 Vol 2 May 2026

: Defining the minimum vertical separation (MOC) required between an aircraft and any terrain or man-made obstacles.

: Specific rules for straight and turning departures, often requiring minimum climb gradients (typically 3.3%) to clear obstacles. Icao Doc 8168 Vol 2

, formally titled "Construction of Visual and Instrument Flight Procedures," is the essential technical manual for procedure design specialists. While Volume I is designed for flight crews, Volume II provides the complex mathematical criteria and obstacle clearance requirements needed to build safe, regular instrument flight operations worldwide. Core Purpose and Scope : Defining the minimum vertical separation (MOC) required

: Providing design rules for the five segments of an instrument approach: arrival, initial, intermediate, final, and missed approach. While Volume I is designed for flight crews,

: Protecting the transition from instrument flight to visual landing. Latest Updates

Volume II is divided into parts that address different navigation technologies and phases of flight:

: Grouping aircraft by stall speed to determine specific obstacle clearance altitudes (OCA/H) for each type. Key Technical Components