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Approach vertical guidance study


ICAO and the international aviation industry have long recognised that instrument approaches that give pilots vertical guidance provide significant safety, operational and environmental benefits over the now widely used non precision approaches. These new approaches are known as APVs and generally require the use of augmented satellite navigation systems. Specific and already quantified advantages of APVs include safer approach path guidance, simpler approach procedures and lower minimum descent altitudes in adverse weather.

CASA, along with Airservices and industry generally, has been working to set the standards for APVs and to facilitate their adoption in Australia. The major airlines, with the advanced navigation technologies of their ‘new generation' aircraft such as the Boeing 737-800, are already using this type of approach around Australia and overseas.

To allow the benefits of APVs to flow to a broader industry base there is a need for the industry to decide of the types of GNSS augmentations to be deployed in Australia. While other states such as the USA are already deploying these systems, the range of potential solutions available couple with Australia's unique aviation requirements dictate that a technology review and cost benefit study is necessary to give guidance as the road ahead. The Aviation Policy Group (APG) has requested CASA to undertake on its behalf such a study and CASA is pleased to announce that Booz Allen Hamilton has been selected to complete the study.

What the study will involve

The study will involve a review of the various technical solutions both currently available and under development as well the benefits and costs of the proposed implementations. The study will also include the potential use of the proposed augmentation system by other transport sectors such as sea, road and rail. These and the various possible users of APVs will be approached to provide input to the study on their requirements, expectations and benefit/cost estimates.

Potential systems that may be suitable for Australia include those using aircraft augmentation such as RNP, the wide area satellite augmentation, the Ground Based Regional System (GRAS) being developed by Airservices Australia and possible hybrids of core systems such as GPS and Galileo, the system under development by the Europeans.

The study is expected to take some 6 months to complete with the results being presented to the APG and to the industry for consideration.

The industry is encouraged to support this study and provide data to Booz Allen Hamilton to assist them in completing a successful study.

Contact details

Further details of this study can be obtained from the Booz Allen Hamilton project manager:
Mr Greg Hewson
Phone: 02 6279 1905
Email: hewson_greg@bah.com

The CASA Project Manager is:
Ian Mallett
Phone: 131 757
Email: ian.mallett@casa.gov.au


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