Like this script
But change in SalvageVehicleHeli.sqf.
if (ExileClientPlayerIsInCombat) exitWith
{
["ErrorTitleAndText",["Failed!", "You need a Foolbox + Crowbar + Grinder + Hammer"]] call ExileClient_gui_toaster_addTemplateToast;
To:
if (ExileClientPlayerIsInCombat) exitWith
{
["ErrorTitleAndText",["Failed!", "You cannot salvage a vehicle while in combat!"]] call ExileClient_gui_toaster_addTemplateToast;