Date: 08/13/2005 Views: 3646
Date: 05/30/2007 Views: 7470
Date: 03/27/2004 Views: 4145
Date: 08/23/2023 Views: 144783
Date: 05/23/2007 Views: 549851
One is required to use a "view-limiting device" in IFR training. These are home-made.