General Description:
Lexan or similar translucent material, dimesions akey cap assembly., consisting of 1 each key cap and 1 each insert k plunger, has black engraving, the characters to be 0.125 in. High and 0.020 in. Line width, the engraved lettering shall be opaque so lettering will appear black in a darkened room key caps are internally illuminated, this key cap is style or type j-825, the letter asterisk g asterisk is engraved on this key cap, application data, p/o key module assembly., texas instruments, inc., p/n 684579-2, end item, automated radar terminal system - arts iii, texas instruments, inc., p/n 729408-1, manufacturer data, george risk industries, inc. 24229, columbus, nebraska, p/n 2-128-004-31a
Federal Aviation Administration