TWA 747-100 launch layout
TWA's original cabin carried 58 First Class and 284 economy seats, with the upper deck kept as a First Class lounge called the Penthouse.
Map note: First Class was split between Zone A (24) and Zone B (38). Economy was nine abreast in a 3-4-2 arrangement. Like Pan Am, TWA kept the short upper deck as an unsold lounge reached by the spiral staircase.
Configuration source: Yesterday's Airlines — TWA's 747s in the 70s





