SAE ARP 4822A:2021-09-03

Night Vision Imaging System (NVIS) Compatible Illuminated Pushbutton Switches and Indicators

Publication date: 2021-09-03
Original language: English
Pages: 15

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Publication date: 2021-09-03
Original language: English
Pages: 15

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Short description

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 and MIL-STD-3009 NVIS compatibility requirements and to provide information on the visual characteristics of NVIS compatible pushbutton switch and indicators. The recommendations are primarly for military aircraft since civilian aircraft FAR requirements typically do not cover NVIS applications with the exception of those covered by RTCA/DO-275.

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