Note 7 - Segment Information (Details) - Schedule of Segment Reporting Information, by Segment (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 3,587,674	$ 4,034,581	$ 6,716,750	$ 7,234,556
Cost of sales	2,718,330	2,758,832	4,727,189	4,772,649
Gross margin	869,344	1,275,749	1,989,561	2,461,907
Engineering, research, and development	497,726	448,572	981,622	928,949
Selling, general and administrative	660,034	671,410	1,539,227	1,324,660
Amortization of debt discount	30,061	25,600	60,935	48,587
Amortization of deferred financing costs	27,080	27,080	54,160	54,160
Loss on extinguishment of debt	0	0	0	26,600
Change in fair value of common stock warrants	(27,801)	67,345	106,080	42,773
Interest (income) expense, net	57,387	97,356	119,867	201,433
Total expenses	1,244,487	1,337,363	2,861,891	2,627,162
Income (loss) before income taxes	(375,143)	(61,614)	(872,330)	(165,255)
Avionics Government [Member]
Segment Reporting Information [Line Items]
Net sales	3,026,728	3,453,919	5,547,451	6,256,761
Cost of sales	2,270,257	2,419,505	3,784,672	4,081,751
Gross margin	756,471	1,034,414	1,762,779	2,175,010
Avionics Commercial [Member]
Segment Reporting Information [Line Items]
Net sales	560,946	580,662	1,169,299	977,795
Cost of sales	448,073	339,327	942,517	690,898
Gross margin	112,873	241,335	226,782	286,897
Avionics Total [Member]
Segment Reporting Information [Line Items]
Net sales	3,587,674	4,034,581	6,716,750	7,234,556
Cost of sales	2,718,330	2,758,832	4,727,189	4,772,649
Gross margin	869,344	1,275,749	1,989,561	2,461,907
Engineering, research, and development	497,726	448,572	981,622	928,949
Selling, general and administrative	283,434	293,632	575,717	557,777
Total expenses	781,160	742,204	1,557,339	1,486,726
Income (loss) before income taxes	88,184	533,545	432,222	975,181
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Selling, general and administrative	376,600	377,778	963,510	766,883
Amortization of debt discount	30,061	25,600	60,935	48,587
Amortization of deferred financing costs	27,080	27,080	54,160	54,160
Loss on extinguishment of debt				26,600
Change in fair value of common stock warrants	(27,801)	67,345	106,080	42,773
Interest (income) expense, net	57,387	97,356	119,867	201,433
Total expenses	463,327	595,159	1,304,552	1,140,436
Income (loss) before income taxes	$ (463,327)	$ (595,159)	$ (1,304,552)	$ (1,140,436)