Airplane stairway

摘要

A stairway for aircraft which will fold into a compact package. The stairway is mounted on suitable tracks within the aircraft for alternate positioning, either in alignment with a door thereof for extension therethrough or for movement as a compact package to one side thereof. Such track may be either a standard seat track or a special track provided for the purpose. Translation mechanism such as a sprocket supported chain or a parallelogram arranged linkage may be provided for moving such package translatably and without rotation thereof between a position in front of the aircraft door and a position at one side thereof.