0000354204-01-000069 SC 13G 1 20010202 AMERICAN PACIFIC CORP 0000350832 2810 596490478 DE 0930 SC 13G 34 005-33521 1522171 3770 HOWARD HUGHES PKWY STE 300 LAS VEGAS NV 89109 7027352200 3770 HOWARD HUGHES PKWY STE 300 3770 HOWARD HUGHES PKWY STE 300 LAS VEGAS NV 89109 DIMENSIONAL FUND ADVISORS INC 0000354204 0000 22370029 IL 1231 SC 13G 1299 OCEAN AVE 11TH FLOOR SANTA MONICA CA 90401 3103958005 1299 OCEAN AVENUE 11TH FLOOR SANTA MONICA CA 90401 SC 13G 1 0001.txt 2000 SCHEDULE 13G - AMERICAN PAC CORP