Learjet 60 startup
Dear Lear 60 Drivers,
In the Lear 60 the Avionics Master Switches control almost all avionics systems except for the No1 RTU(with No1 COM), the SDU and both FMS's which are powered all the time when the BATTERY Switches are ON.
-By the Normal Checklist you turn OFF the L&R Avionics Switches before engine start. (obviously to protect the sensitive avionics from voltage transients like with many other aircraft with electric starter motors).
-The checklist doesn't mention the remaining systems powered directly by the Battery Switches.
-So, do you normaly start up with the No1 RTU, FMS boxes, SDU powered, without harm to theese systems?
Many thanks,
balaton