2.
National weather - this image displays radar images for the USA. It is a composite of the NOWRAD images.
3.
Satellite weather - consisting of worldwide images from visible and infrared satellite cameras.
4.
Textual weather - the pilot is able to request METAR, TAF, NOTAM, PIREP for domestic and international airports
5.
Cabin displays - able to view the same data being displayed in the cabin.
The cabin displays consist of the following data:
1.
Geographic maps for the flight and current aircraft position
2.
Names of cities and geographic land marks
3.
Current aircraft altitude, groundspeed, temperature, distances, and ETA
4.
Display of Airshow Network features which include:
.
News
.
Sports
.
Weather
.
Financial information
The GENESYS system interfaces to the airborne radiotelephone or SATCOM installed on the aircraft. Using modem technology, the GENESYS places a telephone call to the Airshow Communication Center and connects to a modem. The requested data is transmitted and stored onboard the aircraft. This data is then available for display. A NOWRAD radar image requires approximately 2-3 minutes to receive onboard the aircraft. Airshow uses 4800 baud modems for data transfer.
Appendix B
Raw planning/replanning interview data
Summary of NWA SOC Meeting
Goal: Use Least Fuel Plan.
Constraints: NWA operates equipment on long routes which results in “tank” limited situations. This means that fuel is the primary consideration in the flight being non-stop. This occurs internationally on their long-haul flights, MSP-Hong Kong, Detroit or JFK or Boston to Narita, where the available capacity of the aircraft is not used in order for the range/Gross Wieght tradeoff will allow them to fly non-stop to the destination (it is a company policy for NWA to avoid a stop along the way for additional fuel). Even in the domestic U.S. their DC-9 fleet flys long routes which is at the upper most of their range, resulting in “tank” limited concerns with cargo and passengers.
Another constraint for NWA in international routing is the issue of overflight fees. Particularly Russia, and to some extent the result of the privitization of Candian ATC, charge high overflight fees making circuitous routing preferable from an economic standpoint.
Another constraint in the flight planning process for NWA is turbulence. NWA prides itself on identifying and subsequently avoiding turbulent airmasses in order to provide a smoother ride to their passengers. To that end, the Meteorology department at NWA develops Turbulent Plot Areas (TPAs) and provide those to the flight crews so that if RE-PLANNING does become an issue, they have information at hand regarding areas & altitudes to avoid in the replanning process.
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