United Airlines has adjusted its expansion of the Boeing 737 MAX 8 for its routes out of Tokyo Narita Airport(NRT). Previously, the airline was set to debut the MAX on services to and from Antonio B. Won Pat International Airport (GUM); the airline will now deploy the narrow-body on services to Guam, Cebu, Kaohsiung, Koror, Saipan, and Ulaanbaatar from the end of April.