My friend and I bring by carry on two Jent Central turbines from Florida jets to Puerto Rico, they went through the TSA scanner( x-ray) when the agent saw what's inside the case they tooked me apart and asked what's on the case ? , I told that was an R/C model engine . They did some test as usual and then I continued my tripp back to PR

Just make shure is a BRAND NEW ENGINE whitout fuel on it , and put all electronics and the turbine itsefl in a ZIPLOCK bag.

But that was my case, I take the risk and all went fine.

Good Luck !