I always take my fountain pens out of my travel bag before leaving if flying is involved. The pressure changes I have always assumed do not do good things to th

I always take my fountain pens out of my travel bag before leaving if flying is involved. The pressure changes I have always assumed do not do good things to the pens. As an unpressurized plane owner I don’t often interact with the TSA, though. OTOH after an extended absence from my office, my desk TWSBI 580 EF worked perfectly the first stroke after six weeks, filled with a Noodler’s plum ink (the name escapes me right now).