As you know, I recently traveled by plane and was originally intending I can finish my build so my daughter can use the GB Pi2 to kill time during the flight. Unfortunately, I did not finish the build in time for this flight.
Last night, while I'm burn-in testing my build, I saw smoke coming out the break-out board and I immediately removed the power!

After thorough checking, I saw some black burn marks in one of my solder points in the break-out. There was no bridging as I constantly test for bridging every time I finish soldering. Turns out it's excess liquid flux that evaporated and caused the smoke. Whew!

Afterwards, I plugged in the power once again and never any smoke since then.
This made me think that since we're building a custom piece of electronic device that didn't go through rigorous quality control tests and might be a fire hazard, is everyone confident on bringing their completed GBZ/GB Pi on an airplane flight?