LTE stands for Lack of Technique and Experience.
It is NOT something that "every helicopter gets".
It was, as Nick said many moons ago, a Spin applied by a certain manufacturer to explain why their too-small tail rotor was causing problems in the Army. It has subsequently woven itself into the myths and fabric of helicopter lore and a lot of people believe it to be Absolute Truth. Thus, every helicopter that is mishandled to the extent that it spins and crashes is attributed to the fabled LTE and is therefore not the pilot's fault.
