7x7 Galvanized aircraft cable GAC is one of the most common, cost effective and versatile wire ropes but is NOT to be used for control cables or any other aircraft use. The 7x7 construction is of medium flexibilty and is used in many of the same applications as 7x19 GAC but where a little less flexibilty is desired. Our GAC is manufactured in accordance with Federal Spec RR-W-410E.