From: Pete Rawson <[email protected]> To: Jeffrey E. <jeevacationggmaiLeom>, Larry Visoski <En CC: Pete Rawson <[email protected]> Subject: Re: GIV update Date: Sun, 10 Apr 2016 23:27:19 +0000 Hi Again Jeffrey, Questions from me- The 25 minutes- Is that during the climb? Did the voltages change on level out? ie, power back, when reaching cruise flight- I would expect reaching cruise altitude at around 25 minutes. The voltage is showing the amount of pressure to close the valves- They are spring loaded to open, the more pressure is to close them, and reduce the temperatures. When anti-ice was selected, did the left show zero? The issue of voltage being present on the right- 2 volts-could point to another electrical issue- As you mentioned at the end, with the pulse issue. Electrically, the system should lose all voltage when the Anti-ice is selected on. The system is DC voltage, and should not be affected with fluctuations from other systems- There are many variables, as you know. The valves are spring loaded open, maybe the spring is weak and/or being stuck on the right valve? I would still like to swap the LP "Fan air" valves next. Since both showed a reading of 3, they were being commanded to close the valves slightly- During climb, and a higher power setting, as far as I know from your message. The right side going to 9 shows trying to close the valve- Stuck valve? Again, both are original, with over 9,000 hours on them. Regards, Pete From: Jeffrey E. <[email protected]> Sent: Sunday, April 10, 2016 4:31 PM To: Pete Rawson Subject: Re: GIV update the right and left were both showing 3 , until 25 min in and then right side again went to 9 and stayed there, we turned on wing ice and it came to 2. no lower. . ? is it possible that the pulse is the result of the voltage maxing out. . ? thanks for your time. EFTA00702600