Seems nothing can stop Bruce (and Maiden):
"Vocalist Bruce Dickinson is currently in training for his license to fly the massive four-engine jet, which is almost twice the size and over three times the weight of the Boeing 757 used on previous tours in 2008/9/11."
"I'm currently doing my training to qualify as a pilot and captain on a Boeing 747. I'm doing this at Cardiff Aviation, my aircraft maintenance facility in Wales, where we recently took possession of a rather splendid 747 simulator which I can't wait to get practicing on!"
Tour starts in US and they will playing first time in El Salvador and China
Iron Maiden And '''The Book Of Souls''' Go Jumbo On Massive 2016 World Tour - Blabbermouth.net