From: "jeffrey E." <[email protected]> To: Larry Visoski c, petesawson®meridian.aero Subject: Re: GIV update Date: Sun, 10 Apr 2016 11:46:53 +0000 understood, question , does the voltage max out at 9, ? if not then the valve works at 9,? altitude seems to effect it. so your answer seems possible, the voltage is applied as a result of resistance and computer. the right engine tgt is highter does that mean that the fan valve is more closed than it should be? maybe a result of a bad resisitor ? . is it a big deal to change fan valve? , could it have been damaged by the bent tube you found? the other mystery is why a pulse in the reading. ? valve? resistor , computer. , electrical bus? On Sun, Apr 10, 2016 at 7:17 AM, Larry Visoski S. wrote: Jeffrey Message from Pete,.below: Dave and I are at airport now in case you decide to depart earlier than 10am„ Plane is fueled and ready,. From Pete: Hello Jeffrey, Larry knows that I am long winded with my responses, Here is my brief- Feel free to read all at your leisure- They are mostly my thoughts so far- I suspect that the right precooler (fan air) modulating valve is bad. They are both original. From the last video and Photo's; The readings show that the left side is being given a voltage to the Torque motor sending a pressure to command the valve to be partially closed. Zero volts, zero pressure is for full open, ie: cold air into the precooler and lowering the temperature into the supply system. The signals show a steady state condition; 3 Volts, 3 PSI. The valve has been sent signals, and has responded correctly, and therefore is in the proper position to maintain 400 degrees in the supply system. This is being monitored, and controlled by the controller, and the sensor inputs. There is no signal from the valve, the temperature monitoring circuit controls the changes required. The right side shows that it is being commanded to close due to the high voltage, and pressures. ( 9 volts, 9