Originally Posted by
HighFlight
True enough for a normal generator, but that's not how an aircraft system works my friend. The GCU will not allow power to pass from the generator to the airplane until the correct power is being generated. And that will not happen until the IDG is spooled up to a certain speed and power has been tested by the GCU; then the GCU allows it to pass to the plane.
This ain't your daddy's Dewalt genset.
Ballsy move, your saying on the 200 if you turn on the battery then flip the gen switch to on, then start the APU you won't get get an AC until the gen is on line?
I think the GCU just won't transfer form GPU to the APU but if you didn't have AC power already on it would try to power the plane.
I knew a guy who shutdown the APU with the gen switch on and both engine gen switches off and AC power wasn't immediately lost power remained while the gen spoiled down and he was able to get an engine gen switch before everything went out.
According to you and I'am not positive the GCU would have isolated the apu gen killing AC power immediately.
Either way his post is relying on the premise that the engineers knew he wouldn't care or wouldn't understand and idiot proofed it for him, so now he's at peace with himself because he's been made aware of said idiot proofing, which is still ignorant.