McDonnell Douglas 500 Spray System
Simplex Model 8500
Simplex Aerospace Model 8500 Spray System for the MD 500. The system consists of a belly-mounted composite tank, which holds 341 liters/90 gallons of liquid. The forward mounted boom has a standard width of 8 meters (27 ft) or optional width of 11 meters (35 ft). Other features include an electrically driven spray pump and motor, and flow meter.