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Inventories (Tables)
9 Months Ended
Feb. 28, 2022
Inventories  
Summary of inventories

February 28, 

    

May 31, 

    

2022

    

2021

Aircraft and engine parts, components and finished goods

$

451.0

$

468.4

Raw materials and parts

 

61.4

 

53.0

Work-in-process

22.8

19.2

$

535.2

$

540.6