My tourer for the TransAmerica Trail is now dismantled as far as necessary to fly, air out of the tyres, front wheel, front mudguard and handlebars removed so it fits in the box. I just need to tape it closed and add some ‘fragile’ stickers 
CreamTeam
The Belgian Eyre-Walkers
Thank you David. I’ll be posting as often as possible
Good luck Piers! Look forward to following your adventures across the USA….