# AIS Products and Services: AIP, NOTAM, AIC, and AIRAC Cycle

> Study the core aeronautical information products and services, including AIP structure, NOTAM and PIB usage, AIC purpose, and AIRAC publication timing.

- **Subject:** 010 — Air Law
- **Section:** 010-08 — Aeronautical Information Service (AIS)
- **Topic code:** 010-08-04
- **Last reviewed:** 2026-03-27
- **Author:** Pablo Asensio Martínez
- **HTML version:** https://pilotsyllabus.com/en/air-law/aeronautical-information-service-ais/aeronautical-information-products-and-services/

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## AIP (Aeronautical Information Publication)

Information of **lasting character** essential to air navigation.
*   **Structure**:
    *   **GEN (General)**: Regulations, differences from ICAO, charges, signals. (State differences go here).
    *   **ENR (En-route)**: Airspace, ATS routes, FIR/UIR/TMA limits.
    *   **AD (Aerodromes)**: Detailed information on aerodromes/heliports.
*   **AIP Amendments**: Permanent changes.
*   **AIP Supplements (SUP)**: Temporary changes of **long duration (3 months or longer)** or information of short duration containing extensive text and/or graphics. (Yellow pages).

## NOTAM (Notice to Air Missions)

Notice containing information concerning the establishment, condition, or change in any aeronautical facility, service, procedure, or hazard, the **timely** knowledge of which is essential.
*   **Distributed by Telecommunication (AFS)**.
*   **Validity**: Temporary of short duration (less than 3 months).
*   **Mandatory Probable Cause (Examples)**:
    *   Closing/opening of runways or aerodromes.
    *   Changes in visual aids or lights.
    *   Epidemics.
    *   Space weather.
*   **NOTAM shall NOT be issued for**: Routine maintenance work on aprons not affecting safety, unserviceable signs, etc.
*   **PIB (Pre-flight Information Bulletin)**: A summary of current NOTAMs prepared before the flight.

## AIC (Aeronautical Information Circular)

Information of explanatory, advisory, or administrative nature that does not qualify for AIP or NOTAM.
*   Recommended color coding:
    *   White: Administrative.
    *   Yellow: ATC.
    *   Pink: Safety.
    *   Mauve: Danger Area maps.
    *   Green: Maps/Charts.

## AIRAC (Aeronautical Information Regulation And Control)
System to regulate significant changes.
*   Changes become effective on predetermined dates (28-day cycle).
*   Information must be distributed at least **42 days in advance** (or 56 for major changes).

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Free study notes from pilotsyllabus.com. Not a substitute for training at an approved ATO.