ICAO Annex 6 - Operation of Aircraft

071-01-01Pablo Asensio Martínez2026-04-011 min

Structure of Annex 6

Aerial photograph of airliners in flight

ICAO Annex 6 is divided into three parts:

  1. Part I: International Commercial Air Transport – Aeroplanes.
  2. Part II: International General Aviation – Aeroplanes.
  3. Part III: International Operations – Helicopters.

Key Concepts (Part I)

Air Operator Certificate (AOC)

An authorization granted by the State of the Operator to an operator to carry out commercial air transport operations.

  • The operator must demonstrate the ability to conduct safe operations.
  • The AOC specifies the type of operations authorized (e.g., passenger/cargo, area of operation, aircraft types).

Operations Manual (OM)

The operator must provide an Operations Manual for the use and guidance of operations personnel.

  • It must be amended or revised as necessary.
  • It contains standard operating procedures (SOPs), aircraft limitations, performance data, and route information.

Responsibilities

  • State of the Operator: The state issuing the AOC. Responsible for oversight.
  • State of Registry: The state on whose register the aircraft is entered. Responsible for airworthiness.
  • Pilot-in-Command (PIC): Responsible for the safety of the aircraft and occupants. Has final authority.
Written and reviewed by

Pablo Asensio

Aeronautical engineer. Passed the thirteen EASA ATPL(A) theoretical knowledge exams studying from these very notes. Writes and reviews each topic against the Part-FCL Learning Objectives.