Discussion
Statement I: Symbol generator failure can remove more than one display.
Statement II: A single generator commonly drives several screens.
In the light of the above statements, choose the correct answer.
Answer: B
Correct answer: Both Statement I and Statement II are correct
Both statements are correct and the second explains the first. A single symbol generator commonly drives several screens, converting sensor and system data into the images they present, so its failure blanks all of them at once.
This is why aircraft carry two or three generators and why reversion switching exists: the crew can move essential content onto whichever screens are still driven, ensuring that what survives is the primary flight display rather than an arbitrary subset. It is also why the display units outnumber the generators behind them.
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