Other equipment trolleys other trolleys will typically be packed in the area where equipment for that airline is stored in the flight production unit. Such trolleys will have not only such things as headsets, first aid boxes, blankets and so on packed into them, but in addition any 'dead-head trolleys' will also be packed here. As explained later in Chapter 11, in order to ensure all the equipment needed by an airline is located at the right station, in some cases trays, crockery and cutlery are transported in trolleys on a flight even though they are not needed for that flight. This is referred to as "dead-heading'.