Which are the aircraft models that need their tail to be supported by a jack when empty? 

Wikipedia says this:

> 
> **Aircraft Tripod Jack** 
> 
> 
> They are used to support a parked aircraft to prevent their tail from
>  drooping or even falling to the ground. When the passengers in the
>  front get off an aircraft, the aircraft becomes tail heavy and the
>  tail will droop..... When needed, they are tugged to the tail and
>  setup by manpower. Once setup, no supervision to the jack is needed
>  until the aircraft is ready to leave.
> 
> 
> 

Are there even commercial airliners that need to be supported this way every time they load / unload? Sounded like a lot of work for ground staff. Was this a legacy equipment thing or still in use today?

<https://en.wikipedia.org/wiki/Ground_support_equipment>