Discussion
Consider the following display and content pairs:
Primary flight display - Attitude, airspeed, altitude and heading
Navigation display - Route, map, weather and traffic
Engine and alerting display - Engine parameters and alert messages
Standby instrument - The moving map at high resolution
How many of the pairs given above are correctly matched?
Answer: D
Correct answer: Only three
Three pairs are right. The primary flight display carries attitude, airspeed, altitude and heading; the navigation display carries the route, map, weather and traffic; and the engine and alerting display carries engine parameters and alert messages.
The fourth is wrong. A standby instrument presents attitude, airspeed and altitude on a small independent unit - the minimum needed to keep control if everything else is lost. It carries no moving map, and a high-resolution one would defeat its purpose, which depends on simplicity and independence.
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