Hello,
I've been flying the 707 and I must say it's great! But the start procedure has been bugging me a bit. I follow all the checklists up to Engine Start, and I can successfully start all engines, but the "Air Supply" gauge on the F/E panel shows no pressure before startup, be it an APU start or an EPU start. Is that right? How can I start any engine without any air pressure?
Another thing, is there a pitot heat switch anywhere? I can't find one.
Thanks.