From: Lvjet <

From: Lvjet < To: [email protected] Subject: Re: GIV update Date: Mon, 18 Jul 2016 15:19:18 +0000 Jeffrey, I checked my old emails for Friday, I never received your email to go home,. I just received this email today at 11:03am July 18th to Go Home . for some reason, it just arrived in my inbox. island intemet delivery delay, sorry,. I should have double checked with you on Friday, I thought you said, didn't feel well when we arrived and you wanted us to remain on STT., I'll always double check in the future, if there is a question in regards to going home,. thx Larry ----Original Message From: jeffre E. <'[email protected]> To: Lvjet < > Sent: Mon, Jul 18, 2016 11:03 am Subject: Re: GIV update ok then , go home, On Fri, Jul 15, 2016 at 10:51 AM, Lvjet wrote: Jeffrey I spoke to Tech ops, John and Mike,. Normal PSI in Duct pressure at FL450 (45,000') is 19 to 22psi, it varies with Density Altitude and Temperature slightly. Mike indicated that Gulfstream does not like the term "Buffet" or "Vibration" they use the term "TRIM Variance" if the exhausted air from pylon precooler air modulation valve was not equal to both UH and R/H the air is disrupted over the tail section of the aircraft Causing a TRIM VARIANCE. I informed Mike that we had to change the Gasket on UH anticipator and found a Loose Temp sensor in Left Pylon, and we changed the R/I-I pylon Anticiptor gasket as a precautionary measure. Now that Bleed system Duct pressure is tight and equal, Mike feels the aircraft is operating at factory specs, Depending on pressurization Bleed system requirements, the Duct pressure will vary when 12th stage bleed valve opens for decent. during climb the duct pressure can read as high as 40psi, since the HP Bleed valve located on each engine is set to modulate exhausted air at 40PSI max into the cabin,. if air was blowing by the Anticipator gasket, this effects the amount of air into the cabin, since the Anticipator is anticipating the 400 degree air, and adjust the HP regulator valve accordingly. We have changed Both HP Regulator valves about a year ago,. so they are good on both engines. Equal temps and PSI on the panel in Radio rack are important information, for smooth ops. thx Larry please note The information contained in this communication is confidential, may be attorney-client privileged, may constitute inside information, and is intended only for the use of the addressee. It is the property of JEE Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this EFTA00823739 communication in error, please notify us immediately by return e-mail or by e-mail to [email protected], and destroy this communication and all copies thereof, including all attachments. copyright -all rights reserved EFTA00823740