From: jeffrey E. <[email protected]> Sent: Sunday, August 16, 2015 3:26 AM To: Larry Visoski Subject: Re: so lets push kathy for an early engine, and put on l=aners at dallas. On Sat, Aug 15, 2015 at 9:54 PM, Larry Visoski >= wrote: Je=frey Great email description of coffin corner,. weight and altit=de vs performance., Below Are comments from Cyrus=supervisor at PBI Gulfstream: -Both left and righ= (cockpit and cabin) packs can feed the cabin silencer through some interc=nnect valves. -Air data computer will only have effect on =uto-throttles, aileron trim and elevator trim (if autopilot is engaged). E=ough autopilot input from drastic course change may lift a little flight s=oiler but the plane would be banking rather aggressively from that input. =o no direct spoiler control. -If you turn the right pack or righ= bleed air off in flight there is a cross-over duct and check valve that w=ll open and allow the left air/pack to supply air to both cockpit and cabi=. The ADC does allow the turbine bypass valve on both ACM's =o open but that's at 42k feet -The left and right pack inlet=valves go into high flow mode from 25 pounds per min to 26.5 PPM at 13k fe=t -They jump again to 28 PPM to the packs at 23k feet =So the ACM turbine bypass valves and the pack inlet valves are both altitu=e controlled but only the turbine bypass valve gets it altitude position f=om the ADC. The other has a built in aniroid on the side of the valve and =enses the atmospheric pressure in the boiler room in flight. -4=iv> -Larry, <=iv>Honestly I doubt the bleed is your problem but only way to tell that I =an think of is to turn them off one at a time in flight. And see if the pr=blem changes„ Best is to turn both off at altitude but that is =ot a flight I'm going on! Cyrus Sent from my iPhone On Aug 1=, 2015, at 9:30 PM, jeffrey E. <[email protected] <mailto:[email protected]= target=» wrote: EFTA_R1_01612888 EFTA02491093