New Moto Guzzi Door Mats Available Now
On the flights I use (UK/Europe) all hand luggage has to fit through a certain sized measuring grid. I would check with the airline you are using to determine the size of hand luggage you are allowed. Don't think you can bend the rules, things are getting tighter on security and allowances all the time.
B) buy a new helmet in Phx
If I buy a helmet in phx it will be a nice one. Flip up chin bar, sun visor, the works! Stuff here is stupid expensive (VAT) and it would be nice to have a new helmet. Might buy some new mc boots, too!
A few years ago when flying home from Italy I bought a Italian made helmet at the airport in Rome. I found it at a clothing/fashion type shop, it was used like a prop for the displays at the airport shop. I talked the clerk into selling it to me, I carried it home with me back to the states. The crew (all Italian) saw me board with the bag and asked what it was, I showed them my new Italian helmet and they cheerfully waved me on board saying that probably was the neatest souvenir I could bring home. The only problem I had was when I commented to my wife that I was ready for the crash. She did not think it was funny and suggested I may not say that again till we got home. I have never seen one like it since. Anyway you shouldn't have a problem flying with a helmet. I know a few people who have done fly and rides with no problems.
One advantage of buying a helmet in the destination country, is that the stickers show that they are legal there - just in case you come across a revenue collector who got out of bed the wrong side that day.
It's bad when you advertise you have the least effective helmet on the market!
Some people have $50.00 brains some have $700 worth