Two subsystem chassis for the Viking Orbiter, both measuring about 16.5″ x 16.5″ x 5″: one is marked "V075 2001A6, 10047260-1 Rev-C, S/N-009, Flight Data Chassis, Subassembly," and is complete with ports on the front and extensive cabling on the back, with the main cable labeled: "2009W6 Interconnect Assy., EA 6 F.D.S., Dwg. 10054996, S/N 004, Rev. H, V.O. 75"; the other is marked "Non-Flight, V075 2001A2, 10047220-1A, S/N 004, CCS Chassis, Subassy," and lacks the ports and wiring.
