Upgauge
TURIN
I don't know where you have read "upgauge", however it is sometimes used as a means of explaining a change of aircraft type on a route. For example if US airways were to offer a through flight Manchester to La Guardia via Charlotte with a single flight number, but a change of aircraft type at Charlotte then that would be an 'upgauge'.
The nearest comparison for this Americanism would be a change of train from a narrow gauge to standard gauge track.
Does that help?
Last edited by Sholto Douglas; 20th Oct 2013 at 08:32.