AUGUR

AUGUR has been developed by EUROCONTROL to meet the requirements stated in:

• Sub-section 5.2 (Normal Procedures) of section 5 (Operational Criteria For Use Of GPS Stand-Alone Equipment) of EASA AMC 20-4 (Airworthiness Approval and Operational Criteria For the Use of Navigation Systems in European Airspace Designated For Basic RNAV Operations), which states:

Given a GPS constellation of 23 satellites or less (22 or less for GPS stand-alone equipment that incorporates pressure altitude aiding), the availability of GPS integrity (RAIM) should be confirmed for the intended flight (route and time). This should be obtained from a prediction program either ground-based, or provided as an equipment function or from an alternative method that is acceptable to the Authority.

Dispatch should not be made in the event of predicted continuous loss of RAIM of more than 5 minutes for any part of the intended flight.

• Sub-section 10.2.1.3 (Pre-flight Planning) of JAA TGL 10 (Airworthiness And Operational Approval For Precision RNAV Operations In Designated European Airspace), which states:

If a stand-alone GPS is to be used for P-RNAV, the availability of RAIM must be confirmed with account taken of the latest information from the US Coastguard giving details of satellite non-availability.

Note: RAIM prediction may be a function of the equipment provided that satellite non-availability data can be entered. In the absence of such a function, an airspace service provider may offer an approved RAIM availability service to users.

AUGUR informs a user of the number of operational satellites and provides a means by which the availability of GPS integrity can be confirmed for an intended flight.

AUGUR is intended to provide all of the information necessary to advise on GPS integrity for European aviation operations, including a simple illustration of the effect of RAIM availability upon the planned route without the need for time-consuming calculations.

To visit the AUGUR site click on the following link: http://augur.ecacnav.com/augur/app/home

To visit the AUGUR MIRROR site click on the following link:
http://augur2.ecacnav.com/augur/app/home