The questionA friend and fellow aviation geek recently asked me why American Airlines paints the tails of its aircraft gray. "I understand why panels constructed of composite materials would need to be painted, but I can't imagine that's why, for example, the MD80 tails are painted gray. So the question is...why does AA paint its tails gray? Thanks."The answer:The history on this is a bit foggy, but here's the best I can piece together...