Because of this fact, detailed searches of large aircraft have to be conducted by maintenance and crew personnel who are familiar with the construction and equipment of the particular plane. Evacuate the area and remove all personal property. Check the area around the aircraft for bombs, wires or evidence of tampering. Tow the aircraft to a distant area. Starting on the outside, searchers work toward the plane's interior.
Searchers start at the lowest level and work upward.
Check out restrooms and lounges. Be alert for small charges placed to rupture the pressure hull or cut the control cables, cables which often run beneath the center aisle. Pay special attention to refuse disposal containers and check food preparation and service areas. Search large cabins in two sweeps. Check the flight deck.