Yes, they exists. Both on the smaller aircraft and larger aircraft segment, in various forms as you outline yourself. Some operators are trying to do homebased 1:2 rotations (such as 10 OFF / 20 ON duty rotations), but if the aircraft homebase is next to where you live, I suppose thatīs doable. China or Saudi ops with 2 month ON / 1 month OFF - yikes.. Iīd rather do something else.