Get you one of these ->
Its $40 @ Grainger near you or they sell something similiar at Walmart for $20. I packed all my parts, batteries, 22, XXX-4, etc. in it and totaled 46 lbs. Carried on my Radio (without batteries in radio case) and 22T (without battery, in backpack) on the plane with me and had no problems...
Traveled to every race I have flown to over the years just like this and didnt have any issues, however, just know that TSA will inspect your box and "unorganize" it for you
just did this for the nats, went from Florida to California with no issues (hence the tags in the picture)
Leon