LT6105 Current Sense Amplifier Output Problem
Are you using the LT6105 commercial package, or are you actually using the rad-hard MS Kennedy version as your red text shows there?

You might have been an assembly issue of some type, or your resistors aren't the values they say they are on the schematic -- I've used this part before and your circuit looks correct, and your math checks out.

Also, the load is on the -IN side, correct? I.E. 5V0_Prelim -> R13 -> 5V0 -> Load? Your first comment states the load is "powered by 5V0" which is a little ambiguous.

Side notes:


it's good practice to put all the pins on a package on your symbol, and label them as NC + No ERC marker in the schematic
additionally, it's a good idea to match the pin names from the manufacturer datasheet
not a bad idea to give the part a decoupling cap or two (0.1uF/0.01uF), or run it through a ferrite or 10R resistor if it's sitting on a noisy 7V0 rail