3 Hot!: Icao Doc 8168 Volume

ICAO Doc 8168, Volume III: Aircraft Operating Procedures is a core technical publication from the International Civil Aviation Organization (ICAO) that provides standardized operational procedures for flight crews and flight operations personnel. ICAO Store Released as a standalone volume in November 2018

  • User adjusts missed approach gradient if needed
  • Export as PDF chart, KML, or ARINC 424 file
    • Volume I — Flight Procedures: This is the "PANS-OPS" bible. It tells procedure designers how to draw instrument approach plates, SID, STARs, and holding patterns. It is highly technical and mathematical.
    • Volume II — Construction of Visual and Instrument Flight Procedures: While often combined with Vol I in discussion, this specifically details the criteria for constructing procedures (obstacle clearance surfaces, OAS, etc.).
    • Volume III — Operational Approvals: This volume shifts focus from designing the path to approving the operator to fly that path. It bridges the gap between regulatory requirements and actual flight operations.

    Part II — Departure Procedures

    • Standard Instrument Departures (SIDs) and obstacle clearance during initial climb.
    • Pilot responsibilities: crossing altitudes, track keeping, thrust/pitch settings.

    This volume was introduced as a standalone document in 2018. Its content was previously part of Volume I: Flight Procedures (Parts I and II) but was moved to Volume III to focus exclusively on aircraft operating topics. icao doc 8168 volume 3

    Design philosophy

    • Fixed-radius holding – Instead of timed legs, aircraft will fly an arc around a waypoint.
    • Energy management holds – Designed for continuous descent operations (CDO), where the hold is actually a descending spiral.
    • Drone integration – As UAS (drones) enter controlled airspace, Volume 3 will need to define holding criteria for unmanned aircraft with different turn performance.

    Yes, you read that correctly. The third volume isn't for pilots—it is for the people who build the RNAV approaches and the pilots who test them before you get to use them. ICAO Doc 8168, Volume III: Aircraft Operating Procedures

    3. The "No-Go" Zones

    One of the most practical takeaways from Volume III is the section on Flight Inspection Tolerance. If an ILS localizer is slightly misaligned but still "legal," Volume III tells the inspector whether to release it to the public or shut it down. Knowing these tolerances (e.g., the difference between a "Category I" and "Special Authorization" alignment) helps you understand why an approach might be NOTAMed as "unmonitored." User adjusts missed approach gradient if needed Export