If you do 406LC you need to put in visible patch panels midway from the tail to the wings, basically at 11 and 1 oclock looking at the nose of the aircraft from in front.

That one got damaged at a mine I worked at.. cherry loadmaster strapped something instead of chaining and it put 2 nice holes in the roof, grounding them for about 6 hours on a Bum F alaska airstrip... their VP flew out with mechanics and equipment in his king air to faciitate getting the herc home.