Ready with your answer?
Yes, the plural of ‘aircraft’ is ‘aircraft’.
The word ‘aircraft’ is an irregular plural.
An irregular plural does not follow the rule of adding an ‘s’ to pluralise a word.
Do you know any more irregular plurals? Comment!
P.S. “The greater part of the world’s troubles are due to questions of grammar.” ― Michel de Montaigne, The Complete Essays