On older DC-10-30 examples (eg: MSN47816, MSN47831), If you have a quick look in the Avionics Compartment, there will probably be 2 x vacant LRU trays (U1-104 & U1-155, PAFAM & PAFAM Display Electronics respectively) located on Center Bay, Shelf 3, Main Radio Rack.
The 2 x PAFAM displays were located upper inboard on Capt & F/O inst panels (under glareshield). Today, you'll find the display slots would have been blanked off upon system deactivation (panels replaced maybe). C/B (AC Bus1, phase A) pulled/locked out, Wiring coiled & stowed.
After any system deactivation, no reason to carry the deadweight if
the modification permits.
BAe146???
