This recommended practice covers the general requirements and test procedures recommended for use with white incandescent integrally lighted instruments. Its use should provide uniformity of illumination from instrument to instrument and legibility under daylight operation. An appendix is provided to familiarize the designer with some of the techniques used to obtain uniformity of color and illumination in various types of instruments.
SAE ARP798-1991 history
2017SAE ARP798B-2017 Design Criteria for White Incandescent Lighted Aerospace Instruments
2012SAE ARP798A-2012 Design Criteria for White Incandescent Lighted Aerospace Instruments
2007SAE ARP798A-2007 (R) Design Criteria for White Incandescent Lighted Aerospace Instruments
1991SAE ARP798-1991 DESIGN CRITERIA FOR WHITE INCANDESCENT LIGHTED AEROSPACE INSTRUMENTS
1965SAE ARP798-1965 Design Criteria for White Incandescent Lighted Aerospace Instruments