Stanley E. McGrew Former Supervisory Pilot, Large Airplane Program Region Four, USDA Forest Service "It is Impossible, in practice, to plan for a “safe” life of exactly so many hours or years. We can only consider the problem in statistical terms and in light of the accumulated data and experience." ~ J. E. Gordon, Structures (325) Much of the material appearing in this document has previously been captured in my PowerPoint slide show “Metamorphous,” the viewing of which re
