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This SAE Aerospace Recommended Practice (ARP) covers the general requirements and test procedures for illuminating systems for integrally lighted aircraft instruments in order to provide (a) uniformity of illumination within each instrument, (b) legibility of instrument presentation under daylight or integral light, and (c) uniformity of illumination between instrument displays.

This ARP is intended to cover the warning, caution and advisory indicating system required for aerospace vehicles.

This ARP is intended to cover the warning, caution and advisory indicating system required for aerospace vehicles.