The difference in indicated stall AoA is also exacerbated when leading edge devices are installed and used. For example, the A-6 Intruder had full-span leading edge slats as well as full-span Fowler flaps on the trailing edge. Buffet onset approaching the stall was about 21 units clean, with stall soon thereafter around 22.5 units. Dirty, buffet started around 25 units, with stall around 30. Note that "units" are not the same as "degrees".