This is terrible news; Charlie Derrington was a legend in the mandolin community; the man who put Bill Monroe's mandolin back together from a collection of splinters, and who pretty much single-handedly restored Gibson as a premier maker of mandolins. He had moved on to a higher level in the company, but as always was generous with his knowledge and time to help others in building or improving their mandolins. One of the good guys has gone, and will be greatly missed. Rest in peace Charlie, and thoughts and prayers to the family left behind.
Tim