upgrades = {
	
	plane_attacker_upgrade = {
		max_level = 5
		
		cost = air

		naval_strike_attack = 0.03
		air_ground_attack = 0.03
		reliability = -0.1
		air_agility = -0.05
	}

	plane_AT_reliability_upgrade = {
		max_level = 40
		cost = air

		linear_cost = {
			cost_by_level = 1
#			cost_by_level_for_licensed_equipment = 5
		}

		level_requirements = {
			1 = {  #1936
				has_tech = basic_machine_tools
			}
			5 = { #1939
				has_tech = advanced_machine_tools
			}
			10 = { #1943
				has_tech = machine_tools5
			}
			15 = { #1945
				has_tech = machine_tools6
			}
			20 = { #1949
				has_tech = machine_tools8
			}
			25 = { #1955
				has_tech = machine_tools11
			}
			30 = { #1959
				has_tech = machine_tools13
			}
			35 = { #1963
				has_tech = machine_tools15
			}
		}

		multiply_stats = {
			reliability = 0.02
#			build_cost_ic = 0.1
		}
#		xp_cost = 1
	}
}
