I'm wondering how you can start Avionics in a plan which has no Avionics Master Switch ? For example, if you start a flight with the Lear45 with the motors not running and you want to ask for an IFR registration with ATC.

Shortcut : Shift + AMerry Christmas

Thanks a lot Patrick !Merry Christmas to you too !And Happy New Year in advance !

Sorry ! I have tried your solution, but it doesn't work !!I'm obliged to start the engine to have access to the radio !!

make sure your battery is on aswell. you can change your key assignsments to make sure you know what key does what aswell. i know some panels dont have these switches so its good to know the key strokes for themErnesto Alvarez

>Sorry ! I have tried your solution, but it doesn't work !! >I'm obliged to start the engine to have access to the radio >!! Shift + M : battery on/offShift + A : avionics on/offMake sure that those are in your key assignments.