0001026608-06-000041 10-K 7 20051231 20060315 20060315 AAON INC 0000824142 3585 870448736 NV 1231 10-K 34 000-18953 06688173 2425 SOUTH YUKON TULSA OK 74107 9185832266 2425 SOUTH YUKON TULSA OK 74107 DIAMOND HEAD RESOURCES INC 19900808 10-K 1 aaon_10k05.txt FORM 10-K EX-23 2 aaon_10k05ex231.txt EXHIBIT 23.1 EX-23 3 aaon_10k05ex232.txt EXHIBIT 23.2 EX-31 4 aaon_10k05ex311.txt EXHIBIT 31.1 EX-31 5 aaon_10k05ex312.txt EXHIBIT 31.2 EX-32 6 aaon_10k05ex321.txt EXHIBIT 32.1 EX-32 7 aaon_10k05ex322.txt EXHIBIT 32.2