Will it fly?
Can you bring Engines and Engine-powered Equipment with Residual Fuel on a plane?
Coop checked the book. Here's the ruling for Engines and Engine-powered Equipment with Residual Fuel:
CARRY-ON
No
CHECKED BAG
No
What the TSA says
Though allowed in checked baggage by international regulations, engines using fuels, internal combustion engines, or fuel cell engines are not allowed in baggage in the United States. Engines and engine-powered equipment that are totally purged of fuel and vapors may be carried as checked baggage (see separate entry). For battery powered equipment, see separate entry.
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Based on official TSA guidance. The final decision rests with the TSA officer at the checkpoint.