Hi. Thanks for the information - the crux is the CTRL+SHIFT+F4 combination - I use the 'Fuel Flow' gauge ('fuelflow.zip' on AVSIM) which adds this function to the cockpit..

But I have a question: In the cargo version of the 707, with APU, how do I get electrics working so that I can get Nav lights etc., without connecting to external power? Surely if the APU is running (which it is - it starts up fine and I close the two Generator switches to activate APU Gen), I shouldn't need to switch Essential Power to 'EXT PWR' to get lights? What if no external power were available and I was relying on the APU for electrics?

Also confusing (to me at least) is why, with APU running, the AC Amps in the APU window shows zero until I flip the SO External Power switch from 'Ground Service' to 'On' (what is the difference between those two settings?) - but that brings up the blue 'fail' light to the left of the switch at the same time.

I also don't know what this means in the 'start up' step-by-step earlier in this thread:

Shift + 2 (Animation Panel)
External Power ON. External Air ON.

What is the 'animation panel'? I get the toggle icons with Shift+2. External Power and air are switched on in the Upper SO, no?

Maybe it would possible to give another step-by-step of the start up you use with the cargo/APU version?

Many thanks,

Martin

Hi...The cargo version of the CS 707 has an APU (but not the passenger version) - this is the FS9 version, not FSX (which I don't have). The icon switcher panel (Shift+2) has an APU icon, which opens that window. My manuals explain the APU in some detail - I can only assume we are at crossed purposes here!

Similarly, perhaps re. Ctrl+Shift+F4. This sets the fuel flow so that engines will start - for instance in the default Learjet. I only meant that having added the AVSIM gauge to the 707 panels, I can use that instead of the keyboard to activate Ctrl+Shift+F4. I didn't mean to imply there was any kind of problem - if I don't activate the Fuel Flow gauge (or hit Ctrl+Shift+F4) the engines start to spool then fail. Otherwise, all is fine (but you knew that already!). The documentation with the gauge explains more, but it's really as simple as that.

The only problem remaining is that I can't get current to the systems working properly - with APU Generators on - without switching the dials on the upper SO panel to 'external'. That doesn't seem right to me, but I'm just about to have another look at this,

Thanks,

Martin

OK! My fault then (if this forum had had FSX in the title I would have noticed), but the 'problem' is only a cosmetic one, so I may as well leave it. I start up, fly and land the a/c with no issues..

Thanks...

M.

Thanks, Martin, for pointing out that you are talking about the FS9 version while I was wondering about FSX.
No harm done. 

Nothing to do with this aircraft but I thought I might add that not all apu's provide electric power generation, some aircraft have smaller ones installed solely to provide bleed air for engine starts and don't have sufficient power to run any electric systems.

In the 707, I wouldn't know, but in say the 757 yes you can. As long as APu is running to supply extra charge to batteries. See, engies are started 1 at a time because back in the reciprocating days, you would check to make sure all things are working properly. Nowadays, there are less problems as in the reciprocating engines, but each engine must be monitered and starting both simultaniously would mean that the pilot & copilot can't check the engines carefully and have each other to correct for the other's error.

Well, I don't know, you probably can, and I hope you appreciated my bit of expertise.