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CASA Annual Report 2003 04 Appendices


4. Involvement in ICAO activities

CASA plays an essential role in Australia’s participation in ICAO activities relating to the development of international aviation safety standards. The following are indicative of the contributions made by Australia’s expertise to ICAO’s work during 2003–04.


In consultation with ICAO and other international aviation authorities, CASA is contributing to the development of a strategy to allow the introduction of the Airbus A380 into aerodromes without major airport works requirements.

Asia Pacific Planning & Implementation Regional Group (APANPIRG)

CASA participates regularly in the various study groups of this ICAO forum within our region (e.g. Regional Airspace Safety Monitoring Study Group; Air Traffic Management, Aeronautical Information Service & Search and Rescue Study Group; Communications, Navigation, Surveillance & Meteorology Study Group).


ATM Operational Concept

In October 2003 the 11th Air Navigation Conference endorsed the ATM Operational Concept, and as part of it, the System Safety Approach proposed by Australia to the ICAO Air Traffic Management Operational Concept Panel (ATMCP).

The Conference also endorsed the multi-perspective ATMCP Performance Framework being developed – to which CASA contributes innovatively and substantially – and recommended its progression.

Flight Crew Licensing and Training

A notable area of involvement was as Chair of the ICAO Flight Crew Licensing and Training Panel. The Air Navigation Commission of the ICAO tasked the panel with reviewing Annex 1 of the International Convention on Civil Aviation to remedy the present situation of potentially significant international inconsistencies in the competency of flight crew. The panel was also asked to review the structure of licences and ratings to ensure they provide an appropriate career path. As a world leader in the development of competency-based licensing standards, CASA was able to make a strong contribution to the panel’s work.

Based on the panel’s proposal, the Air Navigation Commission has now agreed in principle to the establishment of a multi-crew licence that consists of a primarily competency-based approach to training. The rewriting of Annex 1 Chapter 2 is expected to reflect the Australian way of doing business – with single licences endorsed with category ratings (for example, private pilot licence, commercial pilot licence, air transport pilot licence with aeroplane or helicopter).



A significant contribution was also made to the work of the ICAO Operations Panel (OPSP), with a CASA staff member appointed as Chair of the Panel and the involvement of another CASA staff member in several OPSP technical subgroups. The Air Navigation Commission (ANC) has tasked the OPSP with developing Standards and Recommended Practices (SARPs) and Guidance Material (GM) for Annex 6 of the International Convention on Civil Aviation, and related operational aspects of Procedures for Air Navigation Services (PANS - OPS and PANS ATM).

The operational issues reviewed by the Panel have considerable global significance, and CASA has played a leading role in the development of SARPs and GM for issues such as fatigue risk management, extended diversion time operations, single-engine IMC (instrument meteorological conditions) operations, land and hold short operations (LAHSO), precision radar monitoring (PRM) operations, and operations on wet and contaminated runways.

A full Panel meeting (OPSP/6) was held in Montreal in September 2003, at the conclusion of which, the Panel was publicly commended by the President of the ANC as a model for other Panels to follow. The respect with which the opinions and experience of CASA officers are regarded within ICAO and in the OPSP forum is a clear indication of Australia’s leading status in the world aviation arena.


Surveillance and Conflict Resolution Systems

Australia is a world leader in the field of Automatic Dependent Surveillance-Broadcast (ADS-B). CASA is assisting the ICAO Operational Data Link Panel develop standards for ADS-B, and the Surveillance and Conflict Resolution Systems Panel develop standards for Airborne Collision Avoidance Systems (ACAS) and Airborne Separation Assistance Systems. Other CASA work in this area in connection with the Air Traffic Management Strategic Plan.

Obstacle Clearance

The Australian Member of the ICAO Obstacle Clearance Panel, in conjunction with a member of L’Ecole Nationale de L’Aviation Civile (France) conducted a one-day hands-on training exercise as part of an ICAO Special Implementation Project (SIP) Workshop on the development of Area Navigation (RNAV) Instrument Approach procedures at the ICAO Asia and Pacific Office in Bangkok.

The workshop was aimed at assisting Asia/Pacific States to implement RNAV instrument approach procedures and was well attended by 67 delegates from 12 countries and 7 international organisations. The exercise introduced delegates to not only the basics of the Global Navigation Satellite System (GNSS) approach design, but to new concepts that will soon be published in PANS-OPS such as the Terminal Arrival Altitude (TAA) concept and constant angle approach design, in which Australia has also played a leading developmental role.


Required Navigation Performance and Special Operational Requirements Study Group

CASA is represented in this group, which was recently established as a focal point for the further development of area navigation (RNAV) and required navigation performance (RNP), and the review of airworthiness aspects of ICAO material related to the certification of aircraft for special operations, flight management systems and electronic navigation displays.

Separation and Airspace Safety Panel

The Seperation and Airspace Safety Panel (SASP) is responsible for the development of ATC standards and separation minima based on models and agreed Target Levels of Safety (TLS). Attendance provides a formal line of communication for Australia with other States regarding safety monitoring and risk assessment. CASA has influenced the direction of the Panel’s work program over a number of years and Australia has been a leader in the implementation of the standards produced by this Panel.

Examples of some of the Panel work being done are:

  • SASP has developed lateral offset procedures with a view to developing a globally applicable standard of 1nm. SASP has reviewed and safety assessed a broader application of offset where any aircraft capable of offsetting could either remain on centreline, or offset 1 or 2NM to the right. Further risk analyses have determined that the application of such offsets is applicable for both parallel and crossing track scenarios, even in 30NM separation applications. ICAO has sent a State Letter confirming this application to all States in August 2004.
  • Australia has proposed the use of a safety case methodology in developing ADS-B separation minima based on comparison to SSR monopulse radar systems. This methodology will align with the requirements of a proposed draft ICAO Safety Management Manual. A most significant issue for Australia is the consideration that implementation of an ADS-B separation standard could deliver major safety and economic benefits for Australian ATC usage.