Volpe National Transportation Systems Center

 

Volpe Journal Spring 98

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Notifying Airplane Pilots of Navigational System Outages
Photo: The display on this GPS receiver

Fig. 1. The display on this GPS receiver informs the pilot of his position and of the availability of RAIM. The Volpe Center developed a computer program that enables the pilot to found out during pre-flight planning when and where GPS will not be available.

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