Navigation data and runway data may be provided to {HEAD ~ an image generating processor} which, in {TAIL ~ turn}, generates an image data set representative of at least one visual aid corresponding to one runway located in the scene outside the aircraft 
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Navigation data and runway data may be provided to { HEAD ~ an image generating processor } which , in { TAIL ~ turn } , generates an image data set representative of at least one visual aid corresponding to one runway located in the scene outside the aircraft
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