BEASY's crack growth simulation tools can provide answers for many of the issues facing owners and operators of high capital cost structures. As structural assets age as a result of various damagesmechanisms (i.e. fatigue cracking, corrosion, and stress-corrosion cracking) it becomes increasingly important to find ways of extending their useful service life. Whether it is an aircraft, bridge, or floating offshore structure that is required to perform longer than its initial design period BEASY can provide critical data on how the structure will perform given a range of damage scenarios. A BEASY analysis can easily be fit into the framework of most structural integrity programs and serve as useful piece of the decision making puzzles surrounding the safe operation of aging structures or equipment.