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Speed of advance
From Wikipedia, the free encyclopedia
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Speed of advance (SOA) is used to indicate the speed to be made along the intended track.[1] The intended (anticipated, desired) speed along the track with respect to the earth, taking into consideration the effect of known or predicted current; speed along the track. SOA is also used to designate the average speed that must be made good to arrive at a destination at a specified time.[2]
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