The high power switch works great when you have to make that commute! Thing climbs like a beast. Just don't tell anyone!

TRUs convert AC to DC (actually the rectifier part of the combined unit (transformer/rectifier unit) does the AC to DC, while the transformer part steps the voltage from 115V to 28V, but that seems to be way beyond this discussion).

Inverters convert DC to AC.

Yes, FirstClass I understand that. KNOWING what cold soaked means and KNOWING what that number is as per your limitations is NOT rocket science. I hold three PIC type ratings and I have yet to see any radical departures or differences between different manufacturer definitions of "cold soaked" and what that number is.

Like I said, (to me) it's not complicated.

I understand the system, I just screwed it up when typing out the explanation. Usually generators make dc, and an inverter changes it to AC (like in a beach).. The hitch is that the TRU's are transformer-rectifiers so it goes the other way (why else would the idg's be on the AC page, feeding the AC buses at very least?). But thanks.

"Use of the engine high power schedule switch light is prohibited." In any phase of flight? This is the "ludicrous" button when you dont want to hit the mountain and dont care about the engine right? - This button allows max thrust on both engines at the same time. Basically APR thrust without engaging APR. The amount of time that this is used is tracked by the maintenance system and reduces engine life limit.

What is "cold soaked" fuel? There will be an indication on EICAS when fuel goes below -40F/C

"Powerplant intermix operations are prohibited"? What? - The CF34-8C5B1 and CF-34-8C1 are the only engines allowed on the -700. To take a CF34-8C5 (-900 engine) and place it on a -700 the engine has to be derated via software reprogramming and the part number changed to a CF34-8C5B1

What is an AC power center? Is that the TRU? The ACPC is a solid state control center on the AFT wall of the avionics bay. It distributes and controls power flow from the APU and engines to various subsystems. The TRU's are located in the forward equipment bay in the nose and they convert the AC power from the engines, APU or external cart to DC power.

On the overhead panel you can use gravity flow or crossflow. does the crossflow pump have an electric pump? Crossflow is via an electric pump. Gravity is simply opening a valve and allows fuel to go from one wing to the other. Don't leave this on on the ground or the aircraft will tip after awhile.

I'm gonna slip a quick question in here, and I apologize it's not part of the current discussion. What model radar is on board the CRJ700/900? I don't have my training material yet but I'm ordering a course in weather radar, and the author provides model-specific guidance.

This seems a little overboard.

If it's red or pink, don't fly in it. Set 4.5-5.5 tilt for T/O and adjust down as you climb.

Course over.

Save your money for first year pay.

So helpful! Thanks!

when you lose the acsc's and you have to control the outflow valve manually the cherry picker moves it quicker and the manual rate knob below it is like fine tuning right?

the roll and pitch select switch light on the glare shield. This light illuminates when you dont chose heading mode or nav mode? if i dont select one at 400 feet the roll light illuminates?

or does this have to do with the roll and pitch disconnect handles when the controls are jammed?

If your not just trolling I sincerely suggest you get together with your class partner, really spend some quality time in the systems book/PRM or talk with your instructor in regards to these questions rather than trying to get answers on an anonymous forum. Specially if your asking this question.