Fixed-wing aircraft certified by FAA as being capable of transport and delivery of fire retardant solutions.

Large planes used to drop fire retardant and water on wildland fires.

Fixed-wing aircraft certified by FAA as being capable of transport and delivery of 600 to 3,0000 gallons of water or other liquid or powder fire retardants. Formerly referred to as "borate bombers" before borate-based retardants became less desirable. Often accompanied by a spotter plane.