The Preflight Lighting Kit is designed to make inspection of the four fluid levels (hydraulic reservoir, oil tank, tail rotor gearbox and transmission) easier during pilot walk around inspection or anytime fluid levels need to be checked. Each light installation contains its own switch and battery, eliminating the need for wire installation and a window is added to the underside of the lower tail rotor gearbox fairing to ease inspection of the tail rotor gearbox fluid level.