A seat mounted extendable litter system includes a structural frame assembly supporting at least one seat. The seat has a seat member and a seat back member rotatable with respect to the seat member defining a seat upright condition and a seat folded condition. A litter tray is slidably connected to the structural frame assembly and oriented substantially horizontal in the seat folded condition such that the litter tray is slidable between a litter tray extended condition and a litter tray stowed condition.