Note 6 - Inventories (Tables)

6 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30, 2017			March 31, 2017
Ground support service parts	$	2,661,735		$	2,447,395
Ground equipment manufacturing:
Raw materials		3,587,397			1,452,201
Work in process		1,822,043			832,635
Finished goods		3,739,160			10,001,193
Printing equipment and maintenance
Raw materials		2,700,219			3,325,142
Work in process		-			324,949
Finished goods		790,344			790,345
Commercial jet engines and parts		5,263,691			3,407,339
Total inventories		20,564,589			22,581,199
Reserves		(2,432,855	)		(2,802,356	)
Total, net of reserves	$	18,131,734		$	19,778,843