ICAO 9718 VOL II PDF

FOREWORD

Background and purpose

Volume II of the Handbook on Radio Frequency Spectrum Requirements for Civil Aviation presents frequency assignment planning criteria for aeronautical radio communication and navigation systems.

This material was developed in response to requests from the ICAO Regions to provide updated frequency assignment planning criteria that can be implemented on a global basis to ensure that aeronautical radio communication and navigation systems are protected from harmful interference on a uniform basis. The frequency assignment planning criteria were developed by the ICAO Aeronautical Communications Panel and the ICAO Frequency Spectrum Management Panel in cooperation with the ICAO Regional Offices.

Status of the Handbook (Volume II)

This volume contains detailed frequency assignment planning criteria for very high frequency (VHF) air-ground communication systems (voice and data) operating in the frequency band 117.975–137 MHz, instrument landing systems (ILS) (localizer and glide path), VHF omnidirectional range (VOR), distance measuring equipment (DME), ground-based augmentation systems (GBAS) and VHF data broadcast (VDB), supplementing the relevant Standards and Recommended Practices (SARPs) in Annex 10 — Aeronautical Telecommunications, in particular Volume V — Aeronautical Radio Frequency Spectrum Utilization, and provides guidance for the application of these SARPs. In addition, it also provides the relevant background that led to the development of the detailed frequency assignment planning criteria.

In developing the frequency assignment planning criteria, careful attention was given to the material already available and used in the ICAO Regions and published through the relevant Regional Air Navigation Plans.

Implementation of frequency assignment planning criteria

The material contained in this volume is general in nature and should be applicable in all ICAO Regions. However, implementation in the Regions has to take place through relevant decisions by the Regional Planning and Implementation Groups (PIRGs), which are responsible for amending and updating provisions of the Regional Air Navigation Plans. Specific regional requirements on the use of radio frequencies have been accommodated as much as practicable. Future specific regional requirements can be implemented through relevant regional air navigation agreements and/or incorporated in future revisions to this Handbook.

It should be noted that the coordination of frequency assignments as well as the development of the regional frequency assignment plans fall within the remit of the ICAO Regional Offices and that these Offices should be consulted when amendments to these plans are being considered by ICAO Contracting States.

Note.— In some Regions, for administrative and practical purposes, different coordination mechanisms may be implemented.

Global Plan

The frequency assignment planning criteria as contained herein support the development of globally harmonized frequency assignment plans as elements of the Global Air Navigation Plan (GANP), and the application of these criteria ensures the protection of frequency assignments on a globally harmonized and uniform basis.

Organization of this Handbook (Volume II)

Chapter 1 provides general principles and other material to be used in compatibility analyses of aeronautical radio communication and navigation systems. This material forms the technical basis for the frequency assignment planning criteria and can also be used when assessing compatibility of new systems planned to operate in frequency bands already used for aeronautical purposes.

Chapter 2 contains the background that was used when developing frequency assignment planning criteria for VHF air-ground communication systems (voice and data). This chapter gives due account to regional differences in using the VHF band while maintaining the basic principles for the protection of radio frequencies from harmful interference on the basis of globally accepted principles.

Chapters 3, 4, 5 and 6 contain the principles and guidance material for frequency assignment planning for ILS, VOR, DME and GBAS VDB, respectively.