For Boeing to introduce the 777-9X to airports with only Code E-compatible runway widths, the 777-9X will require an exemption. Boeing notes that ICAO approved a similar exemption request to allow the 747-8 to operate on Code E-rated runways. Boeing officials are in the midst of a worldwide airport marketing campaign, visiting 30 airports alone in 2014. The company plans to visit not only airports where the 777-9X is likely to serve. The aircraft also needs compatible airports at alternate sites to qualify for extended operations (ETOPS) routes, Boeing says. Source: Cirium Dashboard