Hey, Vsauce! This Boeing 747 is completely airtight and safe. [sHyflILphpi] Published in Everyday Knowledge Michael here. wdVQgOBcVD6 5i6xKfuEAb5 5BmlIKvnZmr nNzOQunPaMz 35aaEQuwhon an9g3DV3911 EMDltVVj7EZ