Would I uninstall the old one before installing this one Pat - or just install over it?
The old one which? The plane or the VC Redist?
Actually, either one, just install right over whatever "old one" you mean. I never uninstalled the old redist when installing a new version, and never had any trouble. Same for the plane.
HOWEVER: If you have the v16.1 version of the plane, and install the new one, you will have a small problem with duplicate plane names. IE: A number of the variations in the v16.1 are duplicated. I just make a small change to two lines in the new version, thus:
[fltsim.9]
title=FA-18C - NASA Test Plane 852 17.1.30
sim=FA-18_17.1
model=Tactical
panel=Fleet
sound=
texture=NASA_TestPlane_852
kb_checklists=boeing_FA18_check
kb_reference=boeing_FA18_ref
atc_id=NASA 852
atc_airline=Navy
atc_flight_number=002
atc_parking_types=MIL_COMBAT
atc_parking_codes=F18
ui_manufacturer="Boeing"
ui_type="F/A-18C Hornet"
ui_variation="NASA Test Plane 852 17.1.30 "
ui_typerole="Twin Engine Jet"
ui_createdby="FSX Blue Angels"
description="The Hornet combines the ruggedness required of carrier-borne
aircraft with speed and superior agility, especially at high angles of attack.
Its powerful engines, canted vertical stabilizers, horizontal stabilators, large
leading- and trailing-edge flaps, and sophisticated flight control system all
contribute to a level of performance that makes the Hornet a versatile front-
line fighter in several air forces around the world."
Notice the added phrase 17.1.30 on the lines title= and variation=
It takes a bit of copy-n-pasting, but I like to keep some older versions around for various reasons, so it's well worth it.
Also, if you choose to keep the old plane installed to compare with, this method will let you know at a glance which one is which, new or old.
The FMC's is understandably as its calling for the default acceleration Hornets gauge file FA-18.dll which is 32 bit.
P3d doesn't come with the FA-18.dll. You need to copy it from an FSX installation to the ...\P3D\Gauges folder.
I am pretty sure the HornetFCS64 is included for P3D v4 installations, but I may well be wrong. I'll check with Jimi and Orion (who wrote it anyway).
Enjoy all, I sure am!
Pat☺