I have just returned from a 2 week holiday in Morocco, part of which was spent in the Atlas Mountains with my wide field setup. I have my cameras and the controller in hand luggage and the GPDX goes into the 20kg luggage for the hold. The suitcase weighs about 20kg including mount head, tripod legs, tools and portable counterweight. I do use some clothing as padding (protected, in a white rubble sack). I was interrogated a bit by one of the security guys at Marrakech on the flight back (they have an xray machine at the terminal entrance, for everything) but I showed him a picture of the whole setup and he was fine. I've never had any queries after checking in the bag & seeing it disappear towards the plane on the conveyor.