The term 'IT'S CHECKED BEFORE TAKING OFF' can be summarized as the process of LUGGAGE being checked before a flight. This is an important safety measure that is taken to ensure that no dangerous items are brought on board the aircraft. LUGGAGE is inspected by security personnel and must pass certain criteria before it is allowed to be taken on the plane. The crossword solution for this term is 'LUGGAGE', which is the item that is checked before taking off.