MIL-C-7989 Revision B, March 8, 1971
COVER, LIGHT-TRANSMITTING FOR AERONAUTICAL LIGHTS, GENERAL SPECIFICATION FOR
Includes all amendments and changes through Interim Notice 2, June 11, 1999
Additional Comments: RENUMBERED AS MIL-DTL-7989C
This specification covers light-transmitting covers for Aeronautical use.
Covers shall be furnished in the following classes, as specified:
Class A - Annealed Glass (Nonheat Resistant) Class B - Heat-Resistant Glass Class C - High-Impact Strength Glass Class D - Plastic