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Inventory (Tables)
9 Months Ended
Feb. 29, 2012
Inventory  
Summary of inventories

 

 

 

February 29,

 

May 31,

 

 

 

2012

 

2011

 

Raw materials and parts

 

$

102,195

 

$

61,314

 

Work-in-process

 

70,517

 

51,725

 

Purchased aircraft, parts, engines and components held for sale

 

304,755

 

250,360

 

 

 

$

477,467

 

$

363,399