@DesiPilot -- I understand that the INT position enables continuous transmission between cockpit crew and mechanic, and between cockpit crew also, without any PTT action. You also mentioned that pilots can decide what the mechanic gets to hear by selecting the NEUTRAL position, and when they wish to communicate with the mechanic, simply select the INT position. I have a question though -- During the time that the switch is in the NEUTRAL position, how do the cockpit crew communicate with each other?
Also, what is the reason for shutting down the number 1 engine first?
Thanks