Air Travel Effect on a compressed dropper post I will be traveling on a Trans-Atlantic flight next week and have decided to carry my MTB with me due to not finding any rental bikes in the area. I am curious as to how flying the bike in the baggage compartment of an airplane would affect a compressed dropper post. Since I will be packing the bike in a travel case, it makes sense that I do not wish to remove any more components than necessary and, if I can compress the dropper all the way down and keep it there; I will not have to remove the seatpost, disconnect the cable, etc... I should only have to remove/secure the handlebars, wheels, pedals and rear derailleur. I've flown with bikes before but never one with a dropper post and certainly not while fully compressed. Appreciate any insight and solutions...

I've done this several times with no issue.

At sea level, atmospheric pressure is ~14 psi. The recommended pressures for OneUp dropper posts (a representative post, IMO) is between 250 psi and 300 psi.

The point is, even if your plane climbed so high as to exit the atmosphere entirely, the relative pressure change just wouldn't be enough for me to worry about.

If you are worried about it. You could air down your post to e.g., 200 psi, and air it back up upon arrival. I do this with my tires. I drop them down to ~14 psi before a flight.