This document was originally published AIR 1151. This document is a tool for the certifying authority, cockpit designers, instrument suppliers, lighting suppliers, and component suppliers. It is an aid to understanding and meeting relavant regulatory requirements, particularly those relating to pilot compartment view (CFR 25.773(a)(2)) and instrument lights (25.1381(a)(2)) for glare arising from visible eletromagnetic radiation. The purpose of this document is to assist users in developing and certifying flight compartments that meet the regulatory requirements and to provide for greater levels of flight deck comfort with respect to glare. The guidance herein provides the user with an understanding of potential sources of glare, the effects of glare on the human visual system, and strategies to mitigate glare in the design and layout of the cockpit.