Definition
Aeronautical Information Services (AIS) are essential for safe and efficient air navigation. These services provide crucial aeronautical information and data within a specific area, ensuring safety, regularity, and efficiency in air travel.
Description
According to ICAO Annex 15, each country must either establish its own AIS or assign this responsibility to a qualified non-governmental agency. The main goal of AIS is to facilitate the flow of necessary information for international air navigation. This includes details about air navigation facilities, services, and related procedures. Flight operations personnel and Air Traffic Service (ATS) units depend on this data to perform their roles effectively.
The significance of aeronautical data has evolved with advancements like Area Navigation (RNAV) and Required Navigation Performance (RNP). Poor-quality or incorrect aeronautical information can jeopardize flight safety, making it vital that this data is presented in a consistent format.
Aeronautical information is categorized based on urgency, operational relevance, and how long it remains applicable. For instance, airport facility information can be valid for years, while updates regarding construction may only be relevant for a short time. The urgency of this information can also vary depending on how many operators or types of flights it affects. The information itself might be detailed or brief and can include visual aids.
Annex 15 mandates that aeronautical information be shared as an Integrated Aeronautical Information Package. This package consists of several key components:
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Aeronautical Information Publication (AIP), including updates and supplements
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Notices to Airmen (NOTAMs), along with a list of valid NOTAMs
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Pre-flight Information Bulletins (PIB)
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Aeronautical Information Circulars (AICs)
Significant changes need to be communicated in advance, allowing recipients at least 28 days to adjust. This process follows the Aeronautical Information Regulation and Control (AIRAC) system, which is based on specific dates every 28 days. It’s important not to use dates outside AIRAC effective dates for planned operational changes that require mapping updates or navigation database revisions. Additionally, when possible, significant changes should not be scheduled between December 21 and January 17, as this timeframe includes many public holidays worldwide.
