Finally something I can answer. You need to CARRY IT ON THE PLANE, DO NOT CHECK IT!!!!!! Everything I ever experienced with commercial air travel (500 segments, 500K miles in 3 years, aka ROAD WARRIOR) tells me NEVER NEVER NEVER check anything of value. Things to make you life easier: 1. Make sure all knives are out, check those; if they lose them it is no big deal. 2. Get to the airport early, be at security 1.5 hours before your flight. When you go though security it is likely you are going to get snagged. Put the rig in a some kind of bag to minimize this chance, but xray is going to see it and want to inspect it anyway. 3. Put a huge sign "DO NOT PULL!!!!" on the reserve handle and tie it down for added safety. 4. Bring the Cypres card if you have one, and if they ask, it measures altitude and releases the reserve parachute. No it doesn't have CO2... (Don't mention the words cutter, explosive charge, yadda yadda) Exactly what spy said. 5. If you get flack do the following a. Be calm, don't get all fired up. b. Ask to have the FAA REP or the head of security come over. Explain things to the REP and everything should be ok. Usually Joe security does not have a clue. If they do give you a hard time, do not let them bully you and keep you from taking it on onboard, if you run into problems here ask for the airline rep and start again. This make take some time so defiantly error on the safe side, who knows they may be asleep and not even notice but error on the safe side. Good Luck and let us know how it went. Robert