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A-20A Crew Station Lighting
ARP4822A - Night Vision Imaging System (NVIS) Compatible Illuminated Pushbutton Switches and Indicators
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Night Vision Imaging System (NVIS) Compatible Illuminated Pushbutton Switches and Indicators
This SAE Aerospace Recommended Practice (ARP) reviews the basics of NVIS compatibility and discusses the specific illuminated pushbutton switch and indicator requirements for sunlight readability, color, luminance, and NVIS radiance when used in NVIS compatible cockpits. The recommendations and special considerations set forth in this document are made to give the design engineer a better understanding of MIL-L-85762A NVIS compatibility requirements and to provide information on the visual characteristics of NVIS compatible pushbutton switch and indicator displays.
To update the document to incorporate new technology (LED application, etc).