Definition
An official document published by a country's civil aviation authority that contains lasting aeronautical information essential to air navigation, including details on airspace, airports, air traffic services, navigation aids, procedures, and regulations within that country.
Plain English
A country's official handbook of flying information. It tells pilots everything they need to know to fly safely and legally inside that country -- the rules, the airports, the airspace, the navigation aids, and the procedures.
Context Anchor
Seen in flight planning, especially when checking official information for operations in a particular country or for international flights.
Derivation
From the Greek word for air (aer) and Greek nautikos meaning 'pertaining to ships or sailing.' 'Aeronautical' literally means 'navigating through the air.' So an Aeronautical Information Publication is, plainly, a publication of information for navigating through the air.
Why Pilots Care
Gives pilots direct access to authoritative, long-term data required for compliant and safe flight planning, especially on routes outside the United States.
Intuition Check
Do not read “publication” as just any aviation book or article. Here it means an official government-approved source of aeronautical information.
Example Sentence 1
Before her flight to Mexico, she reviewed the Mexican AIP to confirm the entry requirements and the IFR procedures at her destination airport.
Example Sentence 2
Before filing an international flight plan, the crew reviewed the Aeronautical Information Publication to confirm airspace rules and procedures.