Pilot flashlights are an important part of an aviator's toolbox. While most instruments come with recessed lighting for nighttime flying, many overhead illumination systems don't provide adequate light for reading charts, checklists, flight plans and other documents.
In addition, overhead illumination systems can fail due to bulb burnout or an electrical problem. Since many aircraft built before 2000 have incandescent overhead lighting, these light systems often have a limited expected lifespan. To avoid nighttime flying issues, pilots should always carry aviation flashlights in their pilot bag.
When choosing an aviation flashlight for use at night, it's a good idea to choose a product with a red LED light. While a white light LED flashlight provides lots of illumination, many pilots only use this type of aviation flashlight when preparing an aircraft for flight. Since white light can have a negative impact on one's night vision, the use of a white light during nighttime flight can reduce a pilot's ability to see other aircraft and potential hazards. With a red light, pilots can rest assured knowing their night vision is intact.