Gulfstream IV Performance Data & Range Map

[g4800xp]

6000' cabin altitude in the G4 at 430 and 7800" cabin in the Challenger 300.

 

[ProFracPilot]

The fatigue thing is a kinda iffy argument in my opinion. Too many other variables impacting a persons level of fatigue.

I respectfully disagree, Fido. The "fatigue thing" is NOT an iffy argument. When we went from a GII (430 airplane and 8000' cabin) to a GIV 10 years ago, the reduction in fatigue on legs as short as 3 hours was imediately noticeable by both the crew and the principal. That 6000' cabin is wonderful (and just one more of the many wonderful attributes of the GIV).

 

[semperfido]

Roger that, I suppose it could be more meaningful to some. My thought was the differintial between current model pressurization would be minor regarding fatigue.