Note 7 - Segment Information (Details) - Schedule of Segment Reporting Information, by Segment (USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 3,129,076	$ 3,199,975
Cost of sales	2,008,859	2,013,817
Gross margin	1,120,217	1,186,158
Engineering, research, and development	483,896	480,377
Selling, general and administrative	879,193	653,250
Amortization of debt discount	30,874	22,987
Amortization of deferred financing costs	27,080	27,080
Loss on extinguishment of debt	0	26,600
Change in fair value of common stock warrants	133,881	(24,572)
Interest (income) expense, net	62,480	104,077
Total expenses	1,617,404	1,289,799
Income (loss) before income taxes	(497,187)	(103,641)
Avionics Gov't [Member]
Segment Reporting Information [Line Items]
Net sales	2,520,723	2,802,842
Cost of sales	1,514,415	1,662,246
Gross margin	1,006,308	1,140,596
Avionics Comm'l. [Member]
Segment Reporting Information [Line Items]
Net sales	608,353	397,133
Cost of sales	494,444	351,571
Gross margin	113,909	45,562
Avionics Total [Member]
Segment Reporting Information [Line Items]
Net sales	3,129,076	3,199,975
Cost of sales	2,008,859	2,013,817
Gross margin	1,120,217	1,186,158
Engineering, research, and development	483,896	480,377
Selling, general and administrative	292,383	264,145
Total expenses	776,279	744,522
Income (loss) before income taxes	343,938	441,636
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Selling, general and administrative	586,810	389,105
Amortization of debt discount	30,874	22,987
Amortization of deferred financing costs	27,080	27,080
Loss on extinguishment of debt		26,600
Change in fair value of common stock warrants	133,881	(24,572)
Interest (income) expense, net	62,480	104,077
Total expenses	841,125	545,277
Income (loss) before income taxes	$ (841,125)	$ (545,277)