Aeronautical Information Publication (AIP) – Glossary and Deep-Dive Reference

The Aeronautical Information Publication (AIP) is the cornerstone of global flight operations—serving as the definitive, state-issued manual for all permanent aeronautical information necessary for safe, regular, and efficient air navigation. This in-depth glossary and reference explores every critical term, regulatory context, and practical application within the AIP ecosystem, ensuring you understand both the structure and substance of aviation’s most essential document.

Referencing ICAO Annex 15 , FAA AIP , EUROCONTROL eAIP , and other authoritative open sources, this page is structured for operational use by pilots, controllers, dispatchers, and students.

A

AIP – Aeronautical Information Publication

Definition:
The official, legally binding state manual containing permanent, long-term aeronautical information essential for safe navigation within a nation’s airspace.

Usage:

• Required reference for all international and domestic flight operations.
• Used by pilots, ATC, dispatchers, and flight planners.

Regulatory Basis:
Standardized globally by ICAO Annex 15 .

Contents:

• Regulations, procedures, airspace data
• Airport information, navigation aids
• Meteorological services, communications

Update Cycle:
Maintained through AIRAC cycles, amendments, supplements.

AIRAC – Aeronautical Information Regulation And Control

Definition:
A globally aligned, 28-day cycle for publishing permanent, operationally significant changes to aeronautical information.

Application:

• AIP amendments, navigation database updates, chart and procedure changes.
• Ensures all stakeholders receive updates on a synchronized schedule.

Mandate:
Required by ICAO Annex 15, Ch. 6.

Source:
ICAO AIRAC Cycle Information

AIC – Aeronautical Information Circular

Definition:
Official circulars from national AIS offices, providing explanatory or advisory information not suitable for AIP or NOTAM.

Use:

• Administrative notices
• Regulatory or technical guidance
• Safety advisories

Color Coding:
White (administrative), Yellow (operational), Pink (safety), Mauve (temporary restrictions), Green (charts/maps)

Reference:
ICAO Doc 8126, Ch. 7

AIS – Aeronautical Information Services

Definition:
The organizational unit responsible for collecting, validating, and disseminating aeronautical information (AIP, AIC, NOTAM, charts).

Function:

• Data integrity and timely updates
• Liaison with ICAO, other states, and military

Regulatory Mandate:
ICAO Annex 15

AD – Aerodromes Section (AIP Part 3)

Definition:
The AIP’s third main section, providing standardized data for each aerodrome and heliport.

Contents:

• Runway/taxiway specs, lighting, communications
• Aerodrome charts, approach/departure procedures
• Operational hours, rescue/firefighting

Reference:
FAA AIP AD Section

AIS Publications Table

B

Briefing (Pre-flight / Post-flight)

Definition:
The review of all relevant aeronautical information before and after a flight—including AIP, NOTAMs, weather, and charts.

Purpose:
Ensures regulatory compliance and operational safety.

Who Uses:
Airlines, general aviation, military, ATC.

C

Chart (Aeronautical)

Definition:
Graphical representations of airspace, navigation aids, procedures, and terrain, standardized by ICAO Doc 8697.

Types:

• Enroute (ENR) charts
• Aerodrome (AD) charts
• Visual approach charts

AIP Integration:
Included in ENR and AD sections.

Cycle (Publication / AIRAC)

Definition:
The scheduled interval for publishing permanent changes to aeronautical information, usually the 28-day AIRAC cycle.

Purpose:
Global synchronization of essential data.

Customs and Immigration Procedures

Definition:
Regulations for legal entry or exit of aircraft, passengers, and crew, covered in AIP GEN sections.

Where Used:
International airports, flight planning.

Reference:
AIP GEN 1.3

E

eAIP – Electronic Aeronautical Information Publication

Definition:
Digital version of the AIP, formatted per EUROCONTROL eAIP Specification .

Features:

• PDF, HTML, XML formats
• Hyperlinked, searchable
• Used in EFBs and digital planning tools

Example:
UK eAIP

ENR – Enroute Section (AIP Part 2)

Definition:
AIP section covering enroute operations: airspace, ATS routes, navigation aids, prohibited/restricted areas.

Example Subsections:

• ENR 1.5: Holding, Approach, Departure
• ENR 3.1: Lower ATS Routes
• ENR 5.1: Prohibited, Restricted Areas

ENR Table Example

F

FIR – Flight Information Region

Definition:
A defined region of airspace managed by a designated authority for flight information and alerting services.

Where Used:
Basis for ATC jurisdiction, procedural rules, communications.

AIP Reference:
ENR 2 and ENR 6 (charts)

G

GEN – General Section (AIP Part 1)

Definition:
The first section of the AIP, containing administrative, regulatory, and reference information.

Contents:

• Entry, transit, departure procedures
• National regulations, AIS, MET, SAR services
• Fees and charges, abbreviations, codes

Example Subsections:

• GEN 1.7: Differences from ICAO Standards
• GEN 2.2: Abbreviations
• GEN 3.5: Meteorological Services

I

ICAO – International Civil Aviation Organization

Definition:
A UN agency responsible for global aviation standards, including AIP structure/content per Annex 15.

Role in AIP:
Defines format, update procedures, minimum content.

Reference:
ICAO Official Site

IFR – Instrument Flight Rules

Definition:
Regulations and procedures for flying using instruments, not visual references.

AIP Relevance:
ENR 1.3, ENR 1.5 detail IFR procedures and requirements.

IVAO – International Virtual Aviation Organization

Definition:
A global online network for simulated air traffic and flying, using real-world AIPs for procedures.

Resource:
IVAO Global AIP

M

MET – Meteorological Information

Definition:
Weather data critical to flight safety: forecasts, observations, warnings.

AIP Reference:
GEN 3.5 lists MET services, sources, and contacts.

N

NOTAM – Notice to Air Missions

Definition:
Real-time notices of essential, temporary information not yet published in AIP.

Use Cases:
Runway closures, navigation aid outages, temporary restrictions.

Legal Status:
Mandated by ICAO Annex 15.

Types:

• NOTAMN: New
• NOTAMC: Cancellation
• NOTAMR: Replacement

Reference:
FAA NOTAM Search

P

PBN – Performance-Based Navigation

Definition:
A concept based on RNAV, specifying performance requirements for aircraft on routes or in airspace.

AIP Relevance:
ENR 1.10, ENR 1.8

Reference:
ICAO PBN Manual (Doc 9613)

R

RNAV – Area Navigation

Definition:
Navigation method allowing aircraft to fly any desired path within coverage of navigation aids.

AIP Integration:
ENR sections for routes, charting, equipment.

S

SAR – Search and Rescue

Definition:
Coordinated efforts to assist aircraft in distress within a state’s FIR.

AIP Coverage:
GEN 3.6 lists SAR services and contacts.

Supplement (AIP SUP)

Definition:
Temporary addition to the AIP for significant, time-limited changes (e.g., construction, special events).

AIP Use:
Inserted with clear effective/expiry dates.

T

Transition Altitude / Level

Definition:
The altitude/level where pilots switch from local altimeter (QNH) to standard pressure (1013.25 hPa). Published in ENR sections.

U

UIR – Upper Information Region

Definition:
High-level airspace (above FL245/FL260), managed for enroute traffic. Published in ENR 2.

V

VFR – Visual Flight Rules

Definition:
Regulations allowing flight in clear weather conditions with visual navigation.

AIP Reference:
ENR 1.2 details national rules and minima.

W

Waypoints

Definition:
Geographically defined navigation points, specified by coordinates and published in ENR 4.

Types:

• Named (5-letter designators)
• Unnamed (coordinates only)

Z

Zone (Airspace Classifications)

Definition:
Volumes of airspace classified by ICAO (Classes A–G), described in ENR 1.4, ENR 2.

Purpose:
Defines rules for entry, equipment, ATC clearance, and separation minima.

Appendix: Quick-Reference Tables

AIP Structure Table

Update Mechanisms Table

References

• ICAO Annex 15 – Aeronautical Information Services
• FAA AIP Portal
• EUROCONTROL eAIP Specification
• UK NATS AIP
• IVAO Global AIP Access
• Wikipedia: Aeronautical Information Publication

How to Use This Glossary

• Pilots: Consult before flight planning, during pre-flight briefings, and for in-flight reference.
• ATC: Reference for procedures, airspace management, and coordination.
• Dispatchers: Use for route selection, airport suitability, and compliance.
• Aviation Students: Study for exams, licensing, and operational readiness.

Always consult the official AIP of the relevant state and monitor active NOTAMs, Supplements, and AICs for the most current and accurate information.