Confident army order to seize Russian plane (5)

I believe the answer is:

amigo

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'plane' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

I cannot understand how the rest of the clue works.

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(Other definitions for amigo that I've seen before include "Friend in Spanish-speaking area" , "Foreign ally" , "Quixote's friend" , "China (in Spain's view)" , "friend in Uruguay" .)

I've seen this clue in The Sunday Times and The Times.

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