...Cross Check means basically to go over the cabin to make sure all of the seat backs and tray tables are up, and that the passengers are buckled up, and to make sure all luggage is stowed, and that all electronic items are off. Basically Cross Check is Checking to make sure the plane is ready for takeoff/landing ETC.
A cross check is exactly what it says. one person does it and the other cross checks it..
For example flight attendents prepare all doors for departure cross check and all call" The FA
verifies the girt bar is in place, and the other one cross checks it... cross checks are used throughout aviation. in the cockpit, the altimiters, radios and other key things are checked and crosschecked... its a method of verifying that key items are done and done properly when running a checklist.... get it right guys...