EFTA02456205.pdf

From: jeffrey E. <[email protected]> Sent: Monday, July 18, 2016 3:03 PM To: Lvjet Subject: Re: GIV update ok then , go home, On Fri, Jul 15, 2016 at 10:51 AM, =vjet a wrote: <=ont face="arial" color="black" size="2">Jeffrey I spoke to Tech ops, John and Mike,. Normal PSI in Duct pressure at F1450 (45,000') is 19 to 22psi, it =aries with Density Altitude and Temperature slightly. Mike indicated that Gulfstream does not like the term "Buffet&quo=; or "Vibration" they use the term "TRIM Variance" =A0 if the exhausted air from pylon precooler air modulation valve w=s not equal to both L/H 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 L/H anticipator an= found a Loose Temp sensor in Left Pylon, and we changed the R/H pylon Ant=ciptor 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 pressu=e 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 =n 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 =f 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 ar= good on both engines. Equal temps and PSI on the panel in Radio rack are important informati=n, for smooth ops. thx Larry =C2 please note The information co=tained in this communication is confidential, may be attorney-client pr=vileged, may constitute inside information, and is intended only for JEE Unauthorized use= disclosure or copying of this communication or any part thereof is str=ctly prohibited and may be unlawful. If you have received this commu=ication in error, please notify us immediately by return e-mail or by e=mail to EFTA_R1_01559306 EFTA02456205 [email protected] <mailto:[email protected]> , and destroy this communication and all copies thereo=, including all attachments. copyright -all rights reserved </=iv> 2 EFTA_R1_01559307 EFTA02456206