Hi Waco,
here is a simple trick if you don't want to start the engines each time you choose this aircraft, just had two slashes in the panel.cfg file, "window00", line "gauge00" as shown here:
[Window00]
file=MD311_Empty.bmp
size_mm=1024,768
window_size_ratio=1.00
position=7
visible=1
ident=40
//gauge00=MD311_Instr!Shut_Down
Cheers,
Stéph.