wow
(1) UA never operated any DC-9 series
(2) PWM-DEN is 1782 miles per
gcmap, and there’s NO WAY that a D9S could make that as a revenue flight without serious payload limits (
range by itself isn’t an issue; I caught a Space-Available hop on a Navy C-9B that went NAS Alameda to NAS Norfolk with a total of 14 on board)