Recently transited through Delhi airport on my way to and from Kathmandu with a DJI P2+. Delhi is often an adventure, even if you're just connecting flights without a UAV. Security is slow and often haphazard. I had no problem going, but on my way back, had a major kerfuffle: No "tools" of any kind are allowed in carry-on. Any kind. Here's what they removed: Yep, even the allen wrenches (I put the coin in for scale, not bribery). I assumed it was a scam, but looked it up later and indeed "tools" are forbidden on flights from India. I eventually got a supervisor who found an airline rep who shipped it all in a checked-luggage bag. I had plenty of time between connections, so no great loss except for the 45 minutes it took to get through the process. I'm still looking for a web site that focuses on international travel and UAV's. Some airports are routine, some require explosives swipe tests (Munich), some just wave you through. And of course, some countries forbid UAV's altogether.