U.S. NAVY TRAINING FILM MARK 86 FIRE CONTROL SYSTEM MAINTENANCE TRANSISTOR COMPUTER BUGS 15714

Want to support this channel and help us preserve old films? Visit Visit our website This declassified, color, U.S. Navy training film from 1974 is about how to maintain the Fire Control System Mark 86, also known as the MK 86 Gun Fire Control System (GFCS). This system was created to provide ships of destroyer size and larger with an economical, versatile, lightweight, gun and missile fire control system effective against surface and air targets. The film shows basic steps in troubleshooting various bugs (called “casualties“ or “faults“ by the narrator) with electronic systems of the MK 86, most of which were apparently transistor based and utilized programs stored on magnetic tape. The process of identifying bugs, and replacing defective parts, was clearly difficult. This film was made by H.G. Peters & Co. with a script by Esko Townell. A related film about the MK 86 can be seen here: Navy fire control